Recipe: (Percent, Batch)
Wollastonite 33.9 33.90 Ferro frit 3134 21.1 21.10 Kaolin 45.0 45.00 ----- -------- Totals: 100.0 100.00
Comments:
Smooth, beautiful matte surface submitted by: Michelle Campbell e-mail: Lackacreek@ccinet.ab.ca source for original recipe: Plainsman Clays
Recipe: (Percent, Batch)
Potash feldspar 40.0 40.00 Zinc oxide 4.0 4.00 Dolomite 3.0 3.00 Whiting 15.0 15.00 China clay 5.0 5.00 Silica 33.0 33.00 ----- -------- Totals: 100.0 100.00
Also add:
chrome oxide 0.5 0.50 Red iron oxide 4.0 4.00
Comments:
In oxidation at cone 6 a deep red iron oxide red. In reduction at cone 6 a deep brown with a slight green tint at close inspection. source for the original recipe: Emmanuel Coopers Glaze books submitted by: J.D. e-mail: CLAYJUNKIE@AOL.COM
Recipe: (Percent, Batch)
EPK 20.0 20.00 Custer feldspar 20.0 20.00 Wollastonite 20.0 20.00 Frit 3134 20.0 20.00 Flint 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
Chemical Analysis Na2O 0.14 Al2O3 0.38 SiO2 3.44 K2O 0.07 B2O3 0.22 MgO 0.02 CaO 0.76 Alumina:Silica ratio is 1.00 : 9.08 Neutral:Acid ratio is 1.00 : 5.75 Alkali:Neutral:Acid ratio is 1.00 : 0.60 : 3.44 Expansion coefficient: 69.2 x 10e-7 per degree C Oxides causing abnormal expansion effects: B2O3 John Post jp6mchp@moa.net Sterling Heights, Michigan
Recipe: (Percent, Batch)
Potash feldspar 62.2 62.24 Whiting 7.6 7.61 China clay 5.0 4.97 Silica 25.2 25.18 ----- -------- Totals: 100.0 100.00
Also add:
Black iron oxide 1.5 1.52
Comments:
Original recipe called for limestone, substituted whiting, although using dolomite might be better. Add 2% Barium Carbonate for bluish celadon. Also can substitute red iron oxide for the black to get a yellow green celadon. submitted by: GURUSHAKTI@aol.com
Recipe: (Percent, Batch)
K-200 feldspar 21.0 21.00 cz 108-2 50.0 50.00 Zinc oxide 29.0 29.00 ----- -------- Totals: 100.0 100.00
Also add:
Titanium dioxide 12.0 12.00
Comments:
From Sandy Lance. Runny and needs to be feathered to a lighter application at bottom.
Recipe: (Percent, Batch)
Albany Slip 75.0 75.00 Nepheline syenite 20.0 20.00 Gerstley borate 5.0 5.00 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt oxide 5.0 5.00
Comments:
Albany sub.= Yellow Banks Red #101 + Whiting 14% approx. + Dolomite 2-3% approx.
Recipe: (Percent, Batch)
Kona F-4 feldspar 20.0 20.00 Custer feldspar 20.0 20.00 Spodumene 20.0 20.00 Dolomite 20.0 20.00 Whiting 5.0 5.00 Kaolin 15.0 15.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 4.0 4.00
Comments:
This is the Alfred Spodumene glaze revised to C/6.
Recipe: (Percent, Batch)
Gerstley borate 5.8 5.80 EPK 7.2 7.20 Frit 3110 76.9 76.90 Silica 10.1 10.10 ----- -------- Totals: 100.0 100.00
Comments:
From George Bowes
Recipe: (Percent, Batch)
Nepheline syenite 30.0 30.00 Frit 3110 25.0 25.00 Barium carbonate 10.0 10.00 Whiting 15.0 15.00 EPK 10.0 10.00 Flint 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Base glaze is a whitish, stony point matt. From Val Cushing on Studio Potter web site. Variations -- 1.1% copper carbonate - light blue 2.5% iron oxide - yellow with orange-greenish streaks 3.1% manganese dioxide - pinkish-purple
Recipe: (Percent, Batch)
Custer feldspar 40.0 40.00 Zinc oxide 8.6 8.60 Whiting 14.9 14.90 EPK 11.8 11.80 Flint 4.7 4.70 Mount St. Helens Volcanic 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 8.0 8.00
Comments:
The following is a Mt. St. Helens ash glaze from the Seattle area. recipe Makes 1 gal. Good luck! Wendy from Bainbridge Island WA whampton@aol.com
Recipe: (Percent, Batch)
Custer feldspar 30.3 30.27 Whiting 25.7 25.65 Silica 36.5 36.53 EPK 7.6 7.55 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 11.7 11.66
Comments:
Clay Times May/June 2002. Root beer color on iron-bearing clays. Golden yellow on white clays. Layers well with oribe green on top or bottom. Good base for other oxide combinations.
Recipe: (Percent, Batch)
Cedar Heights Redart 40.0 40.00 Ferro frit 3124 30.0 30.00 Ash wood 30.0 30.00 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 4.0 4.00
Comments:
I used sieved unwashed fireplace ash. An excellent honey gold gloss submitted by: Lori Wilkinson e-mail: lorwilk@lookingglass.net Variations -- Add 3% cobalt for a perfect Black Tested on Dillo White clay at a full ^6.
Recipe: (Percent, Batch)
Gerstley borate 46.6 46.70 EPK 22.9 22.90 Flint 30.3 30.40 Bone ash 0.2 0.20 ----- -------- Totals: 100.0 100.20
Also add:
Red iron oxide 10.0 10.00
Comments:
Variations -- refire to cone 08 for opaque rust
Recipe: (Percent, Batch)
Gerstley borate 50.0 50.00 Barnard clay 25.0 25.00 EPK 25.0 25.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Ca B. Firing type: Oxidation From Val Cushing. VC ed
Recipe: (Percent, Batch)
Gerstley borate 50.0 50.00 Albany slip 25.0 25.00 EPK 25.0 25.00 ----- -------- Totals: 100.0 100.00
Comments:
Base glaze is amber in oxidation, green in reduction.
Recipe: (Percent, Batch)
Dolomite 20.0 20.00 Ferro frit 3134 20.0 20.00 Spodumene 20.0 20.00 Kentucky OM #4 20.0 20.00 Flint 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00 Manganese dioxide 3.0 3.00 Red iron oxide 5.0 5.00
Comments:
Works at cone 5 or 6. Lovely amber with some tiny bubbles, floating dust crystals, nice surface Janet Price, Chief Information Officer Carroll College, Waukesha WI 53186 jprice@carroll1.cc.edu or jprice@ccadmin.cc.edu 414-524-7120
Recipe: (Percent, Batch)
Ferro frit 3110 20.0 20.00 Red clay 60.0 60.00 Gerstley borate 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
tested on white stoneware. AMBER WITH TINY BLACK FLECKS. SHINY. TRANSLUCENT. submitted by: Sharon LaRocca-Miranda e-mail: FMIRANDA@alpha.CC.OBERLIN.EDU , FMiranda@oberlin.edu source for original recipe: Zakin
Recipe: (Percent, Batch)
Potash feldspar 28.2 28.18 Whiting 18.2 18.18 Talc theoretical 9.1 9.09 Kaolin 26.4 26.36 Silica 9.1 9.09 Zinc oxide 9.1 9.09 ----- -------- Totals: 100.0 99.99
Also add:
Chrome oxide 1.8 1.82 Cobalt carbonate 0.2 0.23
Comments:
Semi matt, apricot/beige, even, good. From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore Variations -- Tan = +Iron oxide 0.45 +chrome oxide 1.82
Recipe: (Percent, Batch)
K-200 feldspar 46.0 46.00 Soda ash 5.0 5.00 Gerstley borate 12.0 12.00 Whiting 10.0 10.00 Barium carbonate 5.0 5.00 Lithium carbonate 2.0 2.00 Flint 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
Macaloid 2.0 2.00 Titanium dioxide 4.0 4.00 Copper carbonate 5.0 5.00
Comments:
AU Sp '92 tested by KG in OXIDATION at C/6 on dark brown clay body - a knockout glaze! The most interesting of the Starshine series to date tho the green hue was lost. Definitely RUNNY. Good in SODA. Now - how do we get this color at C/9-10? VC ed
Recipe: (Percent, Batch)
Wood ash 24.1 24.07 Barnard clay 20.4 20.37 Custer feldspar 28.4 28.40 Gerstley borate 13.6 13.58 Barium carbonate 9.9 9.88 Zinc oxide 3.7 3.70 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 1.9 1.85
Comments:
Needs to be corrected for fit and pinholes but every clay body is a different can of worms. The barium/boron eutectic makes it hard to say what cone this fires to - the longer it is in kiln or the greater the thermal mass of the kiln the more it will flux. Formulated originally without the ash or slip clay it was semi-satin, semi- gloss somewhere around cone 2. Boron subdues the copper coloration. I'm not taking responsibility for anyone using these glazes, etc. Something is probably toxic. They are examples of my research and they work out in formulation. Which is what they are examples of. So go formulate your own non-toxic glazes, if that is possible. It's probably bad for the environment too. Email me with questions as to household performance, as that may be indicative of other problems. The badly crazed surfaces are not considered to be a continous-non porous sanitary surfaces. Eric Hansen, Lawrence, Kansas wabi_sabi@mailexcite.com
Recipe: (Percent, Batch)
Feldspar 57.6 57.60 Gerstley borate 41.6 41.60 Dolomite 0.3 0.30 Whiting 0.5 0.50 ----- -------- Totals: 100.0 100.00
Comments:
fluidity: very try useing 65% volcanic ash, 35% gerstly borate. This is a very fluid glaze, but does not run off the pot. It works very well over matt glazes. Good luck. submitted by: behrends e-mail: bluemoon@win.bright.net
Recipe: (Percent, Batch)
Volcanic ash 65.0 65.00 Gerstley borate 35.0 35.00 ----- -------- Totals: 100.0 100.00
Comments:
fluidity: very fluid try useing 65% volcanic ash, 35% gerstly borate. This is a very fluid glaze, but does not run off the pot. It works very well over matt glazes. Good luck. submitted by: behrends e-mail: bluemoon@win.bright.net
Recipe: (Percent, Batch)
Barnard clay 20.0 20.00 Ball clay 26.0 26.00 Wollastonite 30.0 30.00 Gerstley borate 24.0 24.00 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 1.0 1.00
Comments:
Recipe: (Percent, Batch)
Kaolin - theoretical 3.2 3.20 Dolomite 4.4 4.40 Whiting 26.1 26.10 Frit 3195 43.2 43.20 Silica 23.1 23.10 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 1.6 1.60 Manganese dioxide 0.8 0.80 Red iron oxide 3.0 3.00
Comments:
Recalc to substitute for Gerstley borate
Recipe: (Percent, Batch)
Gerstley borate 50.0 50.00 Barnard clay 25.0 25.00 EPK 25.0 25.00 ----- -------- Totals: 100.0 100.00
Comments:
Nice light glossy golden brown but not really a runny glaze Tested on Dillo White clay at a full ^6. submitted by: Lori Wilkinson e-mail: lorwilk@lookingglass.net I think this one is already in glazebase. r
Recipe: (Percent, Batch)
Gerstley borate 17.1 17.08 Redart clay 37.2 37.16 Nepheline syenite 3.0 2.98 Whiting 31.0 31.01 Talc 2.8 2.83 Flint 2.5 2.54 Strontium carbonate 6.4 6.39 ----- -------- Totals: 100.0 99.99
Comments:
Revised from a recipe that used Albany Slip and Barium Carbonate originally from Dale Huffman via GlazeBase. Richard Burkett 1994
Recipe: (Percent, Batch)
Gerstley borate 17.1 17.10 Redart 37.2 37.20 Nepheline syenite 3.0 3.00 Whiting 31.0 31.00 Talc 2.8 2.80 Flint 2.5 2.50 Strontium carbonate 6.4 6.40 ----- -------- Totals: 100.0 100.00
Comments:
Revised from a recipe that used Albany Slip and Barium Carbonate originally from Dale Huffman via GlazeBase. Richard Burkett 1994
Recipe: (Percent, Batch)
Dolomite 9.2 9.20 Whiting 23.3 23.30 Strontium carbonate 6.5 6.50 Kaolin - theoretical 17.8 17.80 Silica 8.7 8.70 Frit 3134 34.3 34.30 Bone ash 0.2 0.20 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 0.5 0.50 Red iron oxide 2.8 2.80
Comments:
Revised from a recipe that used Albany Slip and Barium Carbonate originally from Dale Huffman via GlazeBase. Richard Burkett 1994
Recipe: (Percent, Batch)
Gerstley borate 50.0 50.00 Barnard clay 25.0 25.00 EPK 25.0 25.00 ----- -------- Totals: 100.0 100.00
Comments:
Nice light glossy golden brown but not really a runny glaze Tested on Dillo White clay at a full ^6. submitted by: Lori Wilkinson e-mail: lorwilk@lookingglass.net I think this one is already in glazebase. r
Recipe: (Percent, Batch)
Whiting 20.0 20.00 Ferro Frit 3134 20.0 20.00 Custer feldspar 20.0 20.00 Barium carbonate 15.0 15.00 EPK 15.0 15.00 Gerstley borate 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
add nickel oxide at 5% for an apple green pooling dark brown runs nicely and provides lots of interesting results on top of other glazes. Probably not for food surfaces. Works well with Randy's Red and Silky Black Matt clay body: Laguna B-mix a white stoneware submitted by: Iain Begg e-mail: begg@MPRGATE. MPR.CA
Recipe: (Percent, Batch)
Gerstley borate 17.5 17.48 Nepheline syenite 12.0 11.97 EPK 13.1 13.11 Whiting 31.7 31.74 Talc 4.8 4.81 Flint 14.4 14.35 Strontium carbonate 6.5 6.54 ----- -------- Totals: 100.0 100.00
Comments:
Revised from a glaze using Albany Slip, originally from Dale Huffman via GlazeBase. Richard Burkett 1994
Recipe: (Percent, Batch)
Cedar Heights Redart 27.2 27.15 Dolomite 23.8 23.80 Barium sulfate 12.2 12.20 Tennessee #5 ball clay 20.4 20.40 Lithium carbonate 1.7 1.71 Gerstley borate 9.6 9.64 Bone ash 5.1 5.10 ----- -------- Totals: 100.0 100.00
Comments:
Firing: firing type: oxidation or reduction Here is a cone 6 fake ash I used when I was taking classes with Kevin Hluch at Montgomery College in Maryland. It's fairly yellow with greenish runs in oxidation. Not usually as nice in reduction where it is quite brown although I liked it thin on certain things back then. You can probably figure from the decimal places that I copied this from a 10,000 g batch recipie and that whoever figured it out first probably calculated the amounts rather than testing. Good luck. submitted by: Evan Dresel e-mail: PEDresel@AOL.COM
Recipe: (Percent, Batch)
Cedar Heights RedArt Clay 27.2 27.15 Dolomite 23.8 23.80 Barium sulfate 12.2 12.20 Tennessee #5 ball clay 20.4 20.40 Lithium carbonate 1.7 1.71 Gerstley borate 9.6 9.64 Bone ash 5.1 5.10 ----- -------- Totals: 100.0 100.00
Comments:
Here is a cone 6 fake ash I used when I was taking classes with Kevin Hluch at Montgomery College in Maryland. It's fairly yellow with greenish runs in oxidation. Not usually as nice in reduction where it is quite brown although I liked it thin on certain things back then. You can probably figure from the decimal places that I copied this from a 10,000 g batch recipie and that whoever figured it out first probably calculated the amounts rather than testing. Good luck. submitted by: Evan Dresel e-mail: PEDresel@AOL.COM
Recipe: (Percent, Batch)
Custer feldspar 16.8 17.00 Kona F-4 feldspar 9.9 10.00 Ball clay 11.9 12.00 Silica 17.8 18.00 Dolomite 8.9 9.00 Whiting 25.7 26.00 Barium carbonate 8.9 9.00 ----- -------- Totals: 100.0 101.00
Also add:
Rutile 4.0 4.00 Copper carbonate 2.0 2.00
Comments:
Clay Times May/Jn 2004. See Galloway web site for more glazes www.juliagalloway.com Variations -- Galloway says rutile 4-12, copper 2-6
Recipe: (Percent, Batch)
Whiting 11.0 11.00 Ash wood 56.0 56.00 Potash feldspar 11.0 11.00 Ball clay 11.0 11.00 Silica 11.0 11.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 4.0 4.00
Comments:
Works best dipped or sprayed over another glaze. Alone very dry. Variations -- blue = cobalt carb 2%
Recipe: (Percent, Batch)
Gerstley borate 13.6 13.60 Lithium carbonate 4.5 4.50 wood Ash 18.2 18.20 Whiting 18.2 18.20 Albany Slip 36.4 36.40 Kaolin 9.1 9.10 ----- -------- Totals: 100.0 100.00
Comments:
eally hot Cone 6 ash glaze from: lowell baker on ClayArt Received: Thu, 16 Feb 1995 08:52:49
Recipe: (Percent, Batch)
Cedar Heights Redart clay 40.0 40.00 Ferro Frit 3124 30.0 30.00 Ash wood 30.0 30.00 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 4.0 4.00
Comments:
I used sieved unwashed fireplace ash. An excellent honey gold gloss Add 3% cobalt for a perfect Black Tested on Dillo White clay at a full ^6. submitted by: Lori Wilkinson e-mail: lorwilk@lookingglass.net
Recipe: (Percent, Batch)
Hardwood ash (washed) 28.0 28.00 G-200 feldspar 36.0 36.00 Dolomite 10.0 10.00 Kentucky OM #4 21.0 21.00 EPK kaolin 5.0 5.00 ----- -------- Totals: 100.0 100.00
Comments:
use mixed hardwood ash + CMC Last year, with a lot of help from Tom Buck and some of the other Clayart gurus, I adjusted one of the old Daniel Rhodes ash glazes. Original recipe (Cone 9-10): Mixed hard wood ash 35 Oxford spar 35 China clay 15 Talc 15 I fire in an electric kiln. I would never describe it as a foolproof glaze, but if applied with care, it's so beautiful that it just knocks out all the reliable competition. I bisque at ^06 and am now firing at ^6. I have gone to ^9, but that seems to present more problems with pinholing and crazing. Also, I wash the ash. I have also used the same recipe with unwashed ash. The difference is that I would describe the unwashed ash glaze as stony matt and the washed ash glaze as opaque satin matt. Haven't tried this recipe at a lower temperature. You might want to give it a try. marjory r. kline
Recipe: (Percent, Batch)
Redart clay 27.0 27.00 Dolomite 24.0 24.00 Barium carbonate 12.0 12.00 Ball clay 20.0 20.00 Lithium carbonate 2.0 2.00 Gerstley borate 10.0 10.00 Bone ash 5.0 5.00 ----- -------- Totals: 100.0 100.00
Comments:
Two years ago I took a part-time job teaching ceramics at Navarro College in Corsicana, Texas. The college has only one kiln. It' an ancient Paragon High Fire. The design is square and toploading with very small cu. ft. It's been a real challenge to develop an attractive palette of clays and glazes for oxidation firing. I do majolica, colored clays, and cone 6 oxidation ( cone 7 in the sitter). Rafael Molina Rmr3431@dcccd.edu
Recipe: (Percent, Batch)
Wollastonite 10.0 10.00 Silica 15.0 15.00 EPK 20.0 20.00 G-200 feldspar 20.0 20.00 Frit 3134 30.0 30.00 Bone ash 5.0 5.00 ----- -------- Totals: 100.0 100.00
Comments:
This glaze is for human bone ash. From Bill Edwardson ClayArt http://www.tallapoosariverpottery.com/ The bone ash will need screened and in my case it took further pulverizing. Once I screen the content I took some of the larger particles and included it in the clay. The largest particles left over, and there most likely will be some, was put in the urns and sealed. So the finished product contained bone ash in the clay, in the glaze and in the end after final firing the cremains left over were sealed in each container and returned to the family. some of the small calcined (from cremation) fragments acted like iron bleeding in spots through the clay and glaze. It didn't run and I did add some colorants to this glaze. The results were nice!
Recipe: (Percent, Batch)
Wood ash 40.0 40.00 Custer feldspar 40.0 40.00 Ball clay 10.0 10.00 Silica 10.0 10.00 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 4.0 4.00 Cobalt carbonate 2.0 2.00
Comments:
Original recipe called for washed ash. Glaze in blue/greyish mottled matt. I like it but I have not been able to have it bead-up and run. What chemical should I add to change its' melting characteristics? Should I fire to cone 7 or even 8? should I soak? I would also like to have an ash glaze in the green (forest) and brown/tan hues. Any suggestions? submitted by: Mitch Levison e-mail: Mitchlev@aol.com
Recipe: (Percent, Batch)
Ferro Frit 3195 46.0 46.00 Whiting 34.0 34.00 EPK 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
A fake wood ash at cone 6 oxidation. It does run in those rivulets. I added 3% copper carbonate but I am sure some other colorants would be worth a try. submitted by: Suzanne Fuqua e-mail: Suzanne511@aol.com
Recipe: (Percent, Batch)
Hardwood ash (washed) 28.0 28.00 G-200 feldspar 36.0 36.00 Dolomite 10.0 10.00 Kentucky OM #4 21.0 21.00 EPK kaolin 5.0 5.00 ----- -------- Totals: 100.0 100.00
Comments:
use mixed hardwood ash + CMC I would never describe it as a foolproof glaze, but if applied with care, it's so beautiful that it just knocks out all the reliable competition. I wash the ash. I have also used the same recipe with unwashed ash. The unwashed ash glaze is stony matt and the washed ash glaze as opaque satin matt. marjory r. kline
Recipe: (Percent, Batch)
Apple Wood Ash 50.0 50.00 Gerstley borate 20.0 20.00 Whiting 12.0 12.00 EPK 8.0 8.00 Flint 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Typical ash looking, drippy, webby, rivulets. Val, please name this series. Glaze Type: Ca B AshGlaze. Opacity: Mixed. Firing type: Reduction .
Recipe: (Percent, Batch)
Ferro frit 3124 18.2 18.20 Magnesium carbonate 7.1 7.10 Nepheline syenite 10.1 10.10 Strontium carbonate 11.1 11.10 Spodumene 15.2 15.20 EPK 10.1 10.10 Whiting 13.1 13.10 Wood ash 15.2 15.20 ----- -------- Totals: 100.0 100.10
Also add:
Opax 12.1 12.10 Bentonite 2.0 2.00
Comments:
> ClayArt Listserv recipe < If you find this glaze useful, please consider submitting it to the GlazeBase project with full documentation. Use one of the GlazeBase submission formats available on the CeramicsWeb web page. comments: Use unwashed fireplace ash. Doesn't add to 100 because of the strontium/barium substitution, the bentonite, and the ash. This may be closer to cone 5 than cone 6 but seems to work over a range of a couple cones. This is Zakin's GK base with 15% unwashed, mixed fireplace ashes, with strontium substituted for barium and superpax for opax. By itself over porcelain, the glaze is not particularly interesting. But other glazes on top of it run and drip and blend together nicely. I've found that if I glaze the lower 2/3 or 3/4 of a pot with a well-behaved glossy glaze, brush a coat of this ZGK ash glaze on the top 1/3 or so and then brush or dip some third glaze on top of the ash glaze, I get a nice pattern of runs that don't go off the bottom of the pot onto the kiln shelf (usually). Different glazes give different kinds of runs and bands of different glazes are interesting too. The few times I tried a matte glaze on the bottom, the pots cracked. Could have been coincidence. But I've been sticking with glossy glazes on the bottom since then. submitted by: Janet Price e-mail: jprice@kzoo.edu
Recipe: (Percent, Batch)
Fusion Frit F-15 62.5 70.00 Barium carbonate 26.8 30.00 Silica 10.7 12.00 ----- -------- Totals: 100.0 112.00
Also add:
Chrome oxide 1.6 1.80 Bentonite 0.9 1.00
Comments:
Contains small metallic glitter crystals. Not for food use. Clay Times Mar/Apr. 07 p.50
Recipe: (Percent, Batch)
Fusion Frit F-15 70.0 70.00 Barium carbonate 30.0 30.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 2.0 2.00 Chrome oxide 1.5 1.50 Bentonite 1.0 1.00
Comments:
Contains small metallic glitter crystals. Clay Times Mar/Apr. 07 p. 50. Minimally crazed. Should be applied thinly.Not for food use.
Recipe: (Percent, Batch)
Fusion Frit F-496 15.0 15.00 Custer feldspar 21.0 21.00 Whiting 17.0 17.00 Strontium carbonate 15.0 15.00 Kaolin 7.0 7.00 Silica 25.0 25.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 4.5 4.50 Chrome oxide 1.5 1.50
Comments:
Contains small metallic glitter crystals. Clay Times Mar/Apr. 07, p. 51. Not for food use. Add CMC gum for better application.
Recipe: (Percent, Batch)
Fusion Frit F-245 52.0 52.00 Custer feldspar 20.0 20.00 Barium carbonate 16.0 16.00 Silica 12.0 12.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 1.5 1.50 Chromium oxide 1.0 1.00 Macaloid 1.0 1.00
Comments:
From Robert and Beatric Pearson in Clay Times Mar/Apr 07.NOT for food.
Recipe: (Percent, Batch)
Nepheline syenite 23.5 24.00 Sodium bicarbonate 28.4 29.00 Whiting 10.8 11.00 Silica 35.3 36.00 Fluorspar 2.0 2.00 ----- -------- Totals: 100.0 102.00
Also add:
Macaloid 1.0 1.00 Red iron oxide 21.6 22.00
Comments:
From Robert and Beatric Pearson in Clay Times Mar/Apr 07. Calls for Spanish Red Iron Oxide. Due to soluble sodium bicarb, mix just before using and do not store.NOT for food.
Recipe: (Percent, Batch)
Sodium bicarbonate 47.0 47.00 Bentonite 20.0 20.00 Kona F-4 feldspar 10.0 10.00 Silica 23.0 23.00 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 22.0 22.00
Comments:
Contains small metallic glitter crystals.Clay Times Mar/Apr. 07 p.50. Soluble bicarb. Mix glaze fresh; don't store. Calls for Spanish Red Iron.
Recipe: (Percent, Batch)
Sodium bicarbonate 49.0 49.00 Bentonite 25.0 25.00 Whiting 4.0 4.00 Silica 22.0 22.00 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 21.0 21.00
Comments:
From Robert and Beatric Pearson in Clay Times Mar/Apr 07. Calls for Spanish Red Iron Oxide.Due to soluble sodium bicarb, mix just before using and do not store.NOT for food.
Recipe: (Percent, Batch)
Fusion Frit F-79 37.0 40.00 Barium carbonate 44.4 48.00 Silica 11.1 12.00 Sodium bicarbonate 7.4 8.00 ----- -------- Totals: 100.0 108.00
Also add:
Copper carbonate 0.9 1.00 Chromium oxide 1.4 1.50 Macaloid 0.9 1.00
Comments:
From Robert and Beatric Pearson in Clay Times Mar/Apr 07.NOT for food.
Recipe: (Percent, Batch)
Frit 3278 52.0 52.00 Barium carbonate 16.0 16.00 Kaolin 16.0 16.00 Silica 16.0 16.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 2.0 2.00 Chromium oxide 1.5 1.50 Macaloid 1.0 1.00
Comments:
From Robert and Beatric Pearson in Clay Times Mar/Apr 07.NOT for food.
Recipe: (Percent, Batch)
Kaolin 22.2 22.20 Whiting 33.3 33.30 Feldspar 44.4 44.40 ----- -------- Totals: 100.0 99.90
Comments:
A variation for light color is to add a small am't (2%) MnCO3. I am breaking all rules with some of the high-fire stuff from 20 yrs. ago I couldn't bear to throw out. I use the 20-30-40 over highly textured clay, painted with either Barnard clay, one of my many old mixes containing Albany, or even over colored terra sig.s and FIRE TO CONE 6. The terra sig's were never meant for this temp, but they work. The glaze at cone 6 looks more like an engobe but richer in the valleys of the texture. I remember how I used this glaze in high fire reduction and liked it a lot. It can turn gray in reduction. So experiment with opax. submitted by: Bacia Edelman e-mail: medelman@facstaff.wisc.edu
Recipe: (Percent, Batch)
Wood ash 24.1 24.07 Barnard clay 20.4 20.37 Custer feldspar 28.4 28.40 Gerstley borate 13.6 13.58 Barium carbonate 9.9 9.88 Zinc oxide 3.7 3.70 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 1.9 1.85
Comments:
Needs to be corrected for fit and pinholes but every clay body is a different can of worms. The barium/boron eutectic makes it hard to say what cone this fires to - the longer it is in kiln or the greater the thermal mass of the kiln the more it will flux. Formulated originally without the ash or slip clay it was semi-satin, semi- gloss somewhere around cone 2. Boron subdues the copper coloration. I'm not taking responsibility for anyone using these glazes, etc. Something is probably toxic. They are examples of my research and they work out in formulation. Which is what they are examples of. So go formulate your own non-toxic glazes, if that is possible. It's probably bad for the environment too. Email me with questions as to household performance, as that may be indicative of other problems. The badly crazed surfaces are not considered to be a continous-non porous sanitary surfaces. Eric Hansen, Lawrence, Kansas wabi_sabi@mailexcite.com
Recipe: (Percent, Batch)
Nepheline syenite 47.3 47.30 Gerstley borate 14.2 14.20 Flint 27.5 27.50 Whiting 9.3 9.30 Zinc oxide 1.7 1.70 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 1.0 1.00 Copper carbonate 0.3 0.30
Comments:
Variations -- deep leaf green= + 5% copper carb soft green = + 1% chrome ox amber = + 5% RIO
Recipe: (Percent, Batch)
Barium carbonate 6.8 6.80 Gerstley borate 17.5 17.50 Talc 6.4 6.40 Zinc oxide 8.1 8.10 Custer feldspar 38.7 38.70 Flint 22.5 22.50 ----- -------- Totals: 100.0 100.00
Also add:
Titanium dioxide 3.0 3.00 Red iron oxide 3.0 3.00
Comments:
CM May 2000 p101 Variations -- Overspray for mottled effects: ZnO 10 3124 70 Barnard 20
Recipe: (Percent, Batch)
Strontium carbonate 4.9 4.90 Dolomite 10.8 10.80 Whiting 3.4 3.40 Zinc oxide 7.7 7.70 Custer feldspar 32.7 32.70 Silica 17.8 17.80 Frit 3185 19.9 19.90 Kaolin - theoretical 2.8 2.80 ----- -------- Totals: 100.0 100.00
Also add:
Titanium dioxide 2.9 2.90 Red iron oxide 2.9 2.90
Comments:
CM May 2000 p101 Variations -- Overspray for mottled effects: ZnO 10 3124 70 Barnard 20
Recipe: (Percent, Batch)
Kona F-4 feldspar 9.8 11.00 Nepheline syenite 18.8 21.00 EPK 8.9 10.00 Gerstley borate 10.7 12.00 Silica 35.7 40.00 Whiting 3.6 4.00 Wollastonite 7.1 8.00 Frit 3124 5.4 6.00 ----- -------- Totals: 100.0 112.00
Comments:
From Julia Galloway in Clay Times May/Jn 2004. Variations -- Color combinations: Black stain 8 + Barnard 2 Red stain 8-10 + RIO 2 Orange stain 8-10 + rutile 2 yellow stain 8-10 + rutile 2-6 copper carb 2-6 cobalt ox 2-12 RIO 2 + rutile 4
Recipe: (Percent, Batch)
Custer feldspar 20.0 20.00 EPK 20.0 20.00 Frit 3134 20.0 20.00 Wollastonite 20.0 20.00 Flint 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
Variations -- + 10 zircopax
Recipe: (Percent, Batch)
Soda ash 1.0 0.70 Dolomite 3.1 2.20 Kona F-4 feldspar 9.9 7.10 EPK 22.6 16.20 Strontium carbonate 5.4 3.90 Flint 1.4 1.00 Frit 3124 1.4 1.00 Custer feldspar 55.3 39.70 ----- -------- Totals: 100.0 71.80
Comments:
From Sally Brogden.
Recipe: (Percent, Batch)
Dolomite 3.2 3.20 Whiting 0.2 0.20 Strontium carbonate 5.5 5.50 Custer feldspar 72.3 72.40 Kaolin - theoretical 14.7 14.70 Frit 3124 1.4 1.40 Alumina hydrate 2.7 2.70 ----- -------- Totals: 100.0 100.10
Comments:
From Sally Brogden. Re-calc to eliminate soluble ingredients.
Recipe: (Percent, Batch)
Custer feldspar 29.6 29.60 Nepheline syenite 8.6 8.60 Strontium carbonate 4.9 4.90 Zinc oxide 3.3 3.30 Gerstley borate 20.7 20.70 Whiting 1.8 1.80 Silica 31.1 31.10 ----- -------- Totals: 100.0 100.00
Comments:
The base glaze is shiny, almost clear, that is a little fluid at ^6+ . My glazes that get the effect are all at ^6, and usually contain Boron- whether from Gerstley Borate, a frit, or Colemanite. I use a dark Rutile, and some zinc- which is a little contradictory, because of the effect of zinc on Iron colorant. Rutile has a secondary effect when blue is from Cobalt-- the color effect from Cobalt is somewhat transparent, and the opacifier effect of rutile gives the Cobalt blue something to show up against A nice 'hint' of blue can be the effect of a small amount of Cobalt in a transparent glaze with a fair amount of Rutile. and Iron wash under it can also cause interesting variations. This gives a good white with 5% rutile, with opalescent tones and, with luck and a good clay to work on, some blues. Try adding a small amount of Cobalt. This glaze seems to have a lot of ingredients, but I had to change spars, and readjust the recipe using a line blend to zero in on what I wanted. Note that there is no clay-- you may need to use a suspender, or add a little Bentonite. The Strontium I substituted for Barium is a little coarse and can settle. If you try it- please let me know the results. submitted by: Bill Aycock e-mail: baycock@AIRnet.net
Recipe: (Percent, Batch)
Kona F-4 feldspar 30.5 30.53 Whiting 14.1 14.11 Dolomite 11.4 11.41 Magnesium carbonate 7.6 7.61 EPK 14.5 14.51 Flint 7.6 7.61 Gerstley borate 4.6 4.60 Custer feldspar 9.6 9.61 ----- -------- Totals: 100.0 99.99
Comments:
From Sally Brogden.
Recipe: (Percent, Batch)
Nepheline syenite 24.4 24.30 Whiting 6.3 6.30 Dolomite 27.1 26.90 Kaolin - theoretical 16.9 16.80 Silica 17.4 17.30 Frit 3134 7.8 7.80 ----- -------- Totals: 100.0 99.40
Comments:
From Sally Brogden. Re-calculated w/o the gerstley borate.
Recipe: (Percent, Batch)
Nepheline syenite 34.6 34.60 EPK 1.8 1.80 Gerstley borate 16.6 16.60 Silica 32.3 32.30 Whiting 4.0 4.00 Zinc oxide 6.2 6.20 Strontium carbonate 4.5 4.50 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00
Comments:
Recipe: (Percent, Batch)
Frit 3134 50.0 50.00 Tile 6 clay 20.0 20.00 Flint 30.0 30.00 ----- -------- Totals: 100.0 100.00
Comments:
Charlie Cummings [Clay@claylink.com] This is the base for most of my glazes. It is somewhat shiny. I like it that way and I don't care what anyone else thinks! I mix them to close to 46 on the hydrometer. The metal oxides effect the thickness and each variation is adjusted within a range of 45-48. I always layer my glazes. I like the way they break when layered. I dip for at least 3 full seconds for each coat. Thin pots need longer. The glaze goes on thick. I've found that fritted glazes tend to thin as they fire. Three layers of glaze is generally a bad idea. The rule in my studio is, “if you insist on using 3 layers, the third layer must be applied only on the top 1/3 of the pot." See this glaze in action at: http://www.claylink.com/Dinner2004/cummings.html Or http://www.claylink.com/Earthenware2005/Cummings2.html See what my studio members have done with it at: http://www.claylink.com/cccs2006.html (Actually all of our glazes and clays are represented in this show.) I use a black glaze under this glaze on most of my pots. I have to keep some secrets. Variations -- Chrome does well at less than 1%. Cobalt 1%. Black iron oxide works better than red iron. Copper looks beautiful but causes the glaze to bubble and shiver. Rutile can be unpredictable. I use titanium dioxide instead. Mason stains give great colors. Add 5% 6-tile if you want to use encapsulated cadmium stains.
Recipe: (Percent, Batch)
Kaolin 29.3 29.30 Flint 17.4 17.40 Frit 3134 53.3 53.30 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 8.7 8.70 Rutile 4.0 4.00 Red iron oxide 3.0 3.00
Comments:
Recipe: (Percent, Batch)
Whiting 5.0 4.80 Kona F-4 feldspar 36.0 34.60 Dolomite 16.0 15.40 EPK 18.0 17.30 Strontium carbonate 15.0 14.42 Flint 6.0 5.77 Lithium carbonate 4.1 3.90 ----- -------- Totals: 100.0 96.19
Comments:
From Sally Brogden.
Recipe: (Percent, Batch)
Whiting 4.8 4.81 Kona F-4 feldspar 34.6 34.62 Dolomite 15.4 15.38 Soda ash 3.8 3.85 EPK 17.3 17.31 Strontium carbonate 14.4 14.42 Flint 5.8 5.77 Frit 3110 3.8 3.85 ----- -------- Totals: 100.0 100.01
Comments:
From Sally Brogden
Recipe: (Percent, Batch)
Whiting 4.8 4.80 Kona F-4 feldspar 34.6 34.60 Dolomite 15.4 15.40 Soda ash 3.9 3.90 EPK 17.3 17.30 Strontium carbonate 14.4 14.40 Flint 5.8 5.80 Lithium carbonate 3.9 3.90 ----- -------- Totals: 100.0 100.10
Comments:
From Sally Brogden.
Recipe: (Percent, Batch)
Whiting 6.0 5.80 Lithium carbonate 4.0 3.90 Dolomite 16.0 15.60 Strontium carbonate 14.8 14.40 Nepheline syenite 40.8 39.70 Kaolin - theoretical 7.0 6.80 Silica 11.5 11.20 ----- -------- Totals: 100.0 97.40
Comments:
From Sally Brogden.
Recipe: (Percent, Batch)
Cornwall Stone 22.7 22.68 Whiting 18.6 18.56 EPK 5.2 5.15 Zinc oxide 8.3 8.25 NC-4 feldspar 45.4 45.36 ----- -------- Totals: 100.0 100.00
Comments:
From Sally Brogden
Recipe: (Percent, Batch)
Nepheline syenite 38.9 39.30 Whiting 20.2 20.40 Zinc oxide 8.2 8.30 Kaolin - theoretical 9.4 9.50 Silica 23.3 23.50 ----- -------- Totals: 100.0 101.00
Comments:
From Sally Brogden. Re-calculated to replace NC-4 spar
Recipe: (Percent, Batch)
Nepheline syenite 34.1 34.10 EPK 1.8 1.80 Colemanite 16.3 16.30 Silica 31.8 31.80 Whiting 3.9 3.90 Zinc oxide 6.1 6.10 Barium carbonate 5.9 5.90 ----- -------- Totals: 100.0 99.90
Also add:
Bentonite 2.0 2.00
Comments:
Gerstley Borate or Colemanite. submitted by: Charles Gareri e-mail: cgareri@ideanet.doe.state.in.us
Recipe: (Percent, Batch)
Spodumene 20.0 20.00 Dolomite 20.0 20.00 Ferro frit 3124 20.0 20.00 Kentucky OM #4 20.0 20.00 Silica 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
Note: the original article calls for Frit 3134. After having experimented with both 3124 and 3134, we found we liked 3124 better. I have used the following glaze with the Degussa stains and have achieved good results. The glaze appeared in an article written by Gerald Rowan in the December, 1981 issue of CM. It would be worth getting a copy of the article because there are many color variations suggested, many of which we've tested and had beautiful results. If you have trouble finding a copy, e-mail me directly with your address and I'll mail you one. With 5% tin it is a beautiful, fat white semi-mat glaze. The clay body you use makes a huge difference. When I have used the glaze over the GWU clay body (which fires from cones 6-10), the glaze is yucky and transparent. When used over a cone 6 temp clay made with Redart, it is beautiful. Good luck. Barbara barbara lewis
Recipe: (Percent, Batch)
Custer feldspar 49.1 49.10 Kona F-4 feldspar 7.4 7.40 Ball clay 1.9 1.90 Frit 3124 13.9 13.90 Whiting 8.3 8.30 Strontium carbonate 11.1 11.10 Zinc oxide 8.3 8.30 ----- -------- Totals: 100.0 100.00
Comments:
From Julia Galloway in Clay Times May/Jn 2004. Variations -- Recipe says 3124 0-15. Colors: copper carb 2-8; cobalt ox 1/4 -2; tin ox 4-10; RIO 2-4; mang diox 2-6; grey stain 2-8; black stain 2-6
Recipe: (Percent, Batch)
Nepheline syenite 4.7 3.30 Barium carbonate 34.1 24.00 Silica 32.7 23.00 Gerstley borate 14.2 10.00 Ball clay 8.5 6.00 Whiting 4.3 3.00 Magnesium carbonate 1.4 1.00 ----- -------- Totals: 100.0 70.30
Comments:
Variations -- black 5% stain yellow 13-15% stain bermuda green + 13-15% Mason Bermuda stain
Recipe: (Percent, Batch)
Colemanite 12.4 12.40 Nepheline syenite 6.0 6.00 Spodumene - theoretical 4.8 4.80 Dolomite 9.9 9.90 Whiting 0.8 0.80 Zinc oxide 1.1 1.10 Kaolin - theoretical 16.3 16.30 Silica 46.4 46.40 Titanium dioxide 2.4 2.40 ----- -------- Totals: 100.0 100.10
Comments:
Calculated from p. 88 Glazes Cone 6 by Michael Bailey
Recipe: (Percent, Batch)
EPK 10.6 10.56 Whiting 17.4 17.43 Silica 22.8 22.75 Custer feldspar 39.4 39.36 Zinc oxide 9.9 9.90 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 9.9 9.90
Comments:
I use a cone 3-5, even cone 6 white versatile majolica (electric firings) for a major client and this glaze shows off its drips quite well. In fact, it is contributing to some unwanted seconds. The glaze is a great white, but the application is crutial and I am wondering about the glaze poise, or the set of the glaze on the ware. I think the glaze is adequately flocculated with a solution of bentonite and Flocs, and runs at an SG of about 1.6. We have experimented with various dipping strategies, to no avail.There are still streak marks, thick and thin marks, from dipping. The pots are mugs, all the same, and all glazed the same. Usign tongs with sharpened points, the mugs are dipped in an arc motion to glaze both the inside and the outside and as they are raised from the glaze bucket, on an angle, the interior glaze slowly decants out. There are still streaks and uneven parts on the ourside surface, but only on the side that the glaze runs off. The opposite side is perfect. submitted by: Jonathan Kaplan e-mail: jonathan@csn.net
Recipe: (Percent, Batch)
Custer feldspar 36.0 36.00 Whiting 16.0 16.00 Strontium carbonate 17.0 17.00 Kaolin 10.0 10.00 Silica 21.0 21.00 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 10.0 10.00
Comments:
(The following is in response to a glazeing problem that J. Kaplan was haveing with the original base.) It sounds like the problem is one of glaze formulation rather than of application. I would guess that the glaze has too high a surface tension because of the (relatively) high amount of zinc. Looking at it chemically it looks like a higher fire glaze that has been brought down in temperature by the addition of zinc, so the zinc can't just be left out. I guess the easiest solution is to substitute an oxide with a lower surface tension for the zinc. That would point to lead, barium and strontium. I assume that lead and barium are out of the question, so I did a quick substitution using strontium carbonate. The additions of bentonite and floccs would definitly help this glaze for dipping. submitted by: Pete Pinnell e-mail: ppinnell@unlinfo.unl.edu
Recipe: (Percent, Batch)
Kona F-4 feldspar 30.5 30.50 Whiting 14.1 14.10 Dolomite 11.4 11.40 Magnesium carbonate 7.6 7.60 EPK 14.5 14.50 Flint 7.6 7.60 Gerstley borate 4.6 4.60 Custer feldspar 9.6 9.60 ----- -------- Totals: 100.0 99.90
Comments:
From Sally Brogden.
Recipe: (Percent, Batch)
Custer feldspar 47.1 47.10 Whiting 32.0 32.00 EPK 15.4 15.40 Gerstley borate 3.8 3.80 Frit 3110 0.9 0.90 Lithium carbonate 0.1 0.10 Barium carbonate 0.1 0.10 Flint 0.6 0.60 ----- -------- Totals: 100.0 100.00
Comments:
From Sally Brogden.
Recipe: (Percent, Batch)
Custer feldspar 45.2 45.00 Spodumene 0.6 0.60 Whiting 32.0 31.80 Kaolin - theoretical 15.5 15.40 Frit 3134 6.5 6.50 Silica 0.2 0.20 ----- -------- Totals: 100.0 99.50
Comments:
From Sally Brogden. Re-calculated w/o Gerstley Borate
Recipe: (Percent, Batch)
Custer feldspar 43.3 43.30 Whiting 29.4 29.40 EPK 15.5 15.50 Gerstley borate 3.5 3.50 Frit 3110 4.4 4.40 Lithium carbonate 0.4 0.40 Barium carbonate 0.7 0.70 Flint 2.8 2.80 ----- -------- Totals: 100.0 100.00
Comments:
From Sally Brogden.
Recipe: (Percent, Batch)
Custer feldspar 47.7 47.70 Spodumene 2.2 2.20 Whiting 29.6 29.60 Barium carbonate 0.7 0.70 Kaolin - theoretical 12.2 12.20 Frit 3134 6.5 6.50 Silica 1.0 1.00 ----- -------- Totals: 100.0 99.90
Comments:
From Sally Brogden. Re-calculated w/o Gerstley Borate.
Recipe: (Percent, Batch)
Nepheline syenite 41.5 41.50 Barium carbonate 27.8 27.80 Lithium carbonate 4.9 4.90 Whiting 4.9 4.90 Flint 14.5 14.50 Gerstley borate 1.9 1.90 EPK 4.5 4.50 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00
Comments:
from Sally Brogden. Variations -- Turquoise/Green Crystal + copper carb 2.87
Recipe: (Percent, Batch)
Nepheline syenite 44.8 41.30 Spodumene 4.3 4.00 Strontium carbonate 22.6 20.80 Lithium carbonate 4.6 4.20 Whiting 5.9 5.40 Silica 14.4 13.30 Frit 3195 3.4 3.10 ----- -------- Totals: 100.0 92.10
Also add:
Bentonite 2.2 2.00
Comments:
from Sally Brogden.Re-calculated to eliminate Gerstley Borate and barium. Variations -- Turquoise/Green Crystal opper carb 2.87
Recipe: (Percent, Batch)
Dolomite 21.0 21.00 Gerstley borate 5.3 5.25 Custer feldspar 15.8 15.75 Nepheline syenite 26.5 26.50 Ball clay 21.0 21.00 Flint 10.5 10.50 ----- -------- Totals: 100.0 100.00
Comments:
From Sally Brogden Variations -- Crystal Black + cobalt carb 6 + copper carb 6
Recipe: (Percent, Batch)
Cornwall Stone 34.6 34.60 Whiting 8.4 8.40 Gerstley borate 2.9 2.90 Strontium carbonate 9.3 9.30 Kona F-4 feldspar 23.2 23.20 Frit 3110 10.6 10.60 Flint 9.3 9.30 Lithium carbonate 1.7 1.70 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 3.0 3.00
Comments:
From Geoffrey Wheeler Geoffreywheeler@hotmail.com
Recipe: (Percent, Batch)
Kona F-4 feldspar 42.9 42.90 Barium carbonate 8.6 8.60 Magnesium carbonate 8.6 8.60 EPK 17.2 17.20 Wollastonite 8.6 8.60 Flint 8.5 8.50 Strontium carbonate 5.7 5.70 ----- -------- Totals: 100.0 100.10
Comments:
From Sally Brogden.
Recipe: (Percent, Batch)
Custer feldspar 27.2 27.20 Whiting 27.6 27.60 Zinc oxide 12.8 12.80 EPK 22.6 22.60 Flint 8.2 8.20 Colemanite 1.5 1.50 ----- -------- Totals: 100.0 99.90
Comments:
Recipe: (Percent, Batch)
Custer feldspar 20.0 20.00 Frit 3134 20.0 20.00 Wollastonite 20.0 20.00 Silica 20.0 20.00 EPK 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
Recipe: (Percent, Batch)
K-200 Feldspar 43.0 43.00 EPK 14.0 14.00 Whiting 20.0 20.00 Flint 23.0 23.00 ----- -------- Totals: 100.0 100.00
Comments:
A base mixture to which mustbe added 17 parts of any of the usual flux materials: zinc, barium, colemanite, dolomite, talc, wood ash, other alkalines. Base is C/9 Redtn. as is. Glaze Type: Ca 4-3-2-1. Firing type: Ox or Red. From Val Cushing. VC ed
Recipe: (Percent, Batch)
Magnesium carbonate 25.0 25.00 Nepheline syenite 70.0 70.00 Kentucky OM #4 5.0 5.00 ----- -------- Totals: 100.0 100.00
Comments:
Recipe: (Percent, Batch)
Frit 3134 10.0 10.00 Nepheline syenite 35.0 35.00 Wollastonite 10.0 10.00 Magnesium carb 35.0 35.00 EPK 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
From Sandy Lance.
Recipe: (Percent, Batch)
Custer feldspar 25.0 25.00 Whiting 6.0 6.00 Magnesium carbonate 35.0 35.00 Kentucky OM #4 10.0 10.00 Flint 8.0 8.00 Ferro frit 3134 16.0 16.00 ----- -------- Totals: 100.0 100.00
Comments:
This is not really a glaze, it is too high in secondary fluxes. It has a snake - alligator like crawling texture. This looks good over a black slip or over some velvet underglazes. Chemical Analysis Na2O 0.07 Al2O3 0.12 SiO2 1.12 K2O 0.05 B2O3 0.09 TiO2 0.00 MgO 0.67 Fe2O3 0.00 CaO 0.21 Alumina:Silica ratio is 1.00 : 9.09 Neutral:Acid ratio is 1.00 : 5.19 Alkali:Neutral:Acid ratio is 1.00 : 0.22 : 1.12 Expansion coefficient: 67.2 x 10e-7 per degree C Oxides causing abnormal expansion effects: B2O3 Here's some recipes for a couple of crawling glazes. The high magnesium content of the glazes is what encourages the crawling action. The first one crawls into rounded bumps. Someone on the list sent it to me. The only problem that I have with this glaze (and I use the word glaze loosely in this case) is that after you dip your pieces into the glaze it tends to flake off before and sometimes during the firing. I usually brush Amaco Velvet Underglazes on the pots first and then dip them in glaze. The glaze application should be thick to encourage the crawling... happy testing, John Post jp6mchp@moa.net Sterling Heights, Michigan
Recipe: (Percent, Batch)
Gerstley borate 14.7 14.71 Spodumene 31.6 31.59 EPK 3.2 3.16 Dolomite 7.4 7.37 Talc theoretical 13.7 13.69 Flint 29.5 29.48 ----- -------- Totals: 100.0 100.00
Also add:
Granular manganese 0.5 0.53 Manganese dioxide (milled) 0.5 0.53
Comments:
Here's a recipe that Bonnie Hellman sent me that got me thinking about this speckley business: Best Wishes Dan Saultman http://www.concentric.net/~clay-art/Index.shtml
Recipe: (Percent, Batch)
Bone ash 10.0 10.00 Whiting 15.0 15.00 Frit 3124 20.0 20.00 Nepheline syenite 20.0 20.00 EPK 18.0 18.00 Silica 17.0 17.00 ----- -------- Totals: 100.0 100.00
Comments:
+ 6616 stain 12%. Surface is mottled and almost metallic. From Kenny Delio CM Feb. 07 p. 47
Recipe: (Percent, Batch)
Albany slip 75.0 75.00 Nepheline syenite 20.0 20.00 Gerstley borate 5.0 5.00 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt oxide 5.0 5.00
Comments:
Albany sub.= Yellow Banks Red #101 + Whiting 14% approx. + Dolomite 2-3% approx.
Recipe: (Percent, Batch)
Albany slip 72.0 72.00 Spodumene 12.0 12.00 Gerstley borate 16.0 16.00 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt oxide 2.4 2.40
Comments:
Recipe: (Percent, Batch)
Dolomite 21.0 21.00 Gerstley borate 5.3 5.25 Custer feldspar 15.8 15.75 Nepheline syenite 26.5 26.50 Ball clay 21.0 21.00 Flint 10.5 10.50 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt carbonate 6.0 6.00 Copper carbonate 6.0 6.00
Comments:
From Shannon Nelson
Recipe: (Percent, Batch)
Magnesium carbonate 11.0 11.00 Whiting 10.5 10.50 Nepheline syenite 34.2 34.20 Kaolin - theoretical 17.5 17.50 Silica 16.3 16.30 Frit 3134 10.4 10.40 ----- -------- Totals: 100.0 99.90
Also add:
Cobalt carbonate 6.0 6.00 Copper carbonate 6.0 6.00
Comments:
From Shannon Nelson
Recipe: (Percent, Batch)
Dolomite 21.0 21.00 Gerstley borate 5.3 5.25 Custer feldspar 15.8 15.75 Nepheline syenite 26.5 26.50 Ball clay 21.0 21.00 Flint 10.5 10.50 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt carbonate 6.0 6.00 Copper carbonate 6.0 6.00
Comments:
Too many ingredients (these ingredients are also to be added to the recipe) (can't remember who posted this originally, might've been me ;) Mishy Michelle Lowe, potter in the Phoenix desert mishlowe@indirect.com mishlowe@aztec.asu.edu http://www.amug.org/~mishlowe/index.html
Recipe: (Percent, Batch)
Albany slip 65.0 65.00 Barium carbonate 10.0 10.00 Nepheline syenite 10.0 10.00 Talc 15.0 15.00 ----- -------- Totals: 100.0 100.00
Also add:
Chromium oxide 1.0 1.00 Manganese dioxide 2.0 2.00 Cobalt carbonate 2.0 2.00
Comments:
Recipe: (Percent, Batch)
PV Clay 15.0 15.00 Custer spar 35.0 35.00 Flint 10.0 10.00 Whiting 10.0 10.00 Gerstley borate 30.0 30.00 ----- -------- Totals: 100.0 100.00
Also add:
Black stain 7.0 7.00
Comments:
(Granny's shorts with black stain) Beautiful black gloss, pulls away from edges, detail will be white, very nice. This is a good base glaze for trying many oxides and stains in. from Michelle Lowe, potter in the Phoenix desert mishlowe@indirect.com mishlowe@aztec.asu.edu
Recipe: (Percent, Batch)
Whiting 17.0 17.00 Nepheline syenite 34.0 34.00 Kaolin 8.0 8.00 Silica 41.0 41.00 ----- -------- Totals: 100.0 100.00
Also add:
Iron oxide 13.0 13.00
Comments:
Shiny black/brown, ok. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Custer feldspar 46.7 46.70 Whiting 14.4 14.40 EPK 8.9 8.90 Barium carbonate 2.2 2.20 Silica 22.2 22.20 Lithium carbonate 5.6 5.60 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt carbonate 3.3 3.30 Iron oxide 4.4 4.40 Manganese dioxide 2.2 2.20
Comments:
Here's a glaze I adapted from ^10 (just leave out the lithium for ^10). It's a very glossy black black with a very long firing range in either oxidation or reduction. You may want to add just a touch of chrome oxide. I've handed this glaze out in my tile workshops for years, and I know a lot of people have had success with it. submitted by: Paul Lewing e-mail: PJLewing@aol.com
Recipe: (Percent, Batch)
Barnard slip 90.0 90.00 Whiting 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Rob Wadey (robert wadey) 9734B - 100 Ave Grande Prairie, Alberta t8V 0T6 Phone: (403) 538-3731 Fax: (403) 538.3732
Recipe: (Percent, Batch)
Barnard slip 90.0 90.00 Whiting 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Rob Wadey (robert wadey ) 9734B - 100 Ave Grande Prairie, Alberta t8V 0T6 Phone: (403) 538-3731 Fax: (403) 538.3732
Recipe: (Percent, Batch)
Alberta slip 70.0 70.00 Ferro Frit 3124 20.0 20.00 Wollastonite 10.0 10.00 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 5.0 5.00 Mason stain 6600 5.0 5.00 Bentonite 2.0 2.00
Comments:
Here's a recipe I used just recently for a dinnerset and it works very well. Has a nice matte finish and is good for food surfaces. I experimented with increasing amounts of black stain (I think that's a mason #?..in any event, not the stain with the cobalt base) up to an additional 10% and they were all good. submitted by: Dan Taylor e-mail: dataylor@mlc.awinc.com
Recipe: (Percent, Batch)
Gerstley borate 11.0 11.00 Whiting 6.0 6.00 Custer feldspar 77.0 77.00 EPK 6.0 6.00 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt oxide 2.0 2.00 Copper carbonate 4.0 4.00 Manganese dioxide 4.0 4.00
Comments:
I use this ^6 black and love it. If you layer it with white glaze it turns a nice blue. submitted by: Barbara Webb e-mail: barbara@atl.fujikura.com. This version from George Bowes. Black gloss w a hint of metallic.
Recipe: (Percent, Batch)
Custer feldspar 36.0 36.00 Whiting 9.0 9.00 Colemanite 5.0 5.00 Dolomite 5.0 5.00 Talc theoretical 16.0 16.00 Barium carbonate 8.0 8.00 Flint 16.0 16.00 Bentonite 5.0 5.00 ----- -------- Totals: 100.0 100.00
Also add:
Black iron oxide 3.0 3.00 Zircopax 15.0 15.00 Rutile 20.0 20.00 Cobalt oxide 3.0 3.00
Comments:
(Mishy suggests subbing Strontium 5 for the Barium) Here are a few black cone 6 glazes I gleaned from clayart. If you sub Strontium carb for the Barium in the second they will all be food safe. from Dan Taylor I have also added 3% #6600 Black Mason stain for an even more black glaze. Mishy Michelle Lowe, potter in the Phoenix desert mishlowe@indirect.com mishlowe@aztec.asu.edu
Recipe: (Percent, Batch)
Custer feldspar 36.7 36.73 Whiting 9.2 9.18 Colemanite 5.1 5.10 Dolomite 5.1 5.10 Talc theoretical 16.3 16.33 Barium carbonate 8.2 8.16 Silica 16.3 16.33 Black iron oxide 3.1 3.06 ----- -------- Totals: 100.0 99.99
Also add:
Bentonite 5.1 5.10 Zircopax 15.3 15.31 Rutile 20.4 20.41 Cobalt oxide 3.1 3.06
Comments:
Here is one I have used for some time now and have found it to be very stable. It's not the simplest of recipes and probably could be simplified but I've never taken the time to do so because I don't use it that often so a batch lasts for a couple of years and reworking it doesn't seem to be on the top of my need-to list. So I'll give it to you like I have it in my grubby little book. I have also added 3% #6600 Black Mason stain for an even more black glaze. submitted by: Dan Taylor e-mail: dataylor@mlc.awinc.com
Recipe: (Percent, Batch)
Gerstley borate 11.0 11.00 Whiting 5.0 5.00 Custer feldspar 79.0 79.00 EPK 5.0 5.00 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt oxide 2.0 2.00 Copper carbonate 4.0 4.00 Manganese dioxide 4.0 4.00
Comments:
I use this ^6 black and love it. If you layer it with white glaze it turns a nice blue. submitted by: Barbara Webb e-mail: barbara@atl.fujikura.com
Recipe: (Percent, Batch)
Wood ash 25.0 25.00 Nepheline syenite 37.5 37.50 Talc 18.8 18.75 Ball clay 18.8 18.75 ----- -------- Totals: 100.0 100.00
Also add:
Iron oxide 2.5 2.50 Black copper oxide 3.8 3.75 Cobalt oxide 2.9 2.92
Comments:
I've been using the same wood ash formula for about 10 years and have used wood ash from all kinds of known and unknown tree sources (washed and unwashed), fired to cone 6, 7, 8, 9 but mostly to cone 7 in an electric kiln. Write me if you have any questions about these glazes submitted by: Anne Fallis-Elliott e-mail: FallisT@aol.com Variations -- Other colors (delete black colorants): for matt brown with lots of texture add: Rutile 1.74 Iron Oxide 3.50 Manganese Dioxide 3.50 for matt blue breaking to something greenish add: Cobalt Carbonate 3.00 Rutile 3.00
Recipe: (Percent, Batch)
Kaolin 5.0 5.00 Custer feldspar 79.0 79.00 Whiting 5.0 5.00 Colemanite 11.0 11.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper oxide 2.0 2.00 Copper carbonate 3.0 3.00 Manganese dioxide 4.0 4.00 Cobalt oxide 2.0 2.00
Comments:
from Patty Block in Tupelo, MS. Very reliable, doesn't run or pit. More metallic in reduction.
Recipe: (Percent, Batch)
Custer feldspar 78.8 78.84 Colemanite 10.7 10.69 Whiting 5.5 5.51 EPK 5.0 4.96 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 4.2 4.19 Manganese dioxide 4.2 4.19 Cobalt carbonate 2.1 2.09
Comments:
A really great glossy black. from Michelle Lowe, potter in the Phoenix desert mishlowe@indirect.com mishlowe@aztec.asu.edu
Recipe: (Percent, Batch)
Spodumene 50.0 50.00 Gerstley borate 25.0 25.00 Flint 25.0 25.00 ----- -------- Totals: 100.0 100.00
Also add:
Black iron oxide 10.0 10.00 Cobalt oxide 2.0 2.00 Copper carbonate 4.0 4.00
Comments:
(wonderful!) Here are a few black cone 6 glazes I gleaned from clayart. If you sub Strontium carb for the Barium in the second they will all be food safe. From Sharon LaRocca-Miranda via Mishy Michelle Lowe, potter in the Phoenix desert mishlowe@indirect.com mishlowe@aztec.asu.edu
Recipe: (Percent, Batch)
Potash feldspar 38.2 38.20 Silica 23.6 23.60 Whiting 13.6 13.60 Kaolin 13.6 13.60 Zinc oxide 10.9 10.90 ----- -------- Totals: 100.0 99.90
Also add:
Red iron oxide 7.3 7.30 Cobalt oxide 0.9 0.90
Comments:
Here is a Cone 6 glaze that I have found to be very reliable This gives a shiny, mirror black. regards Brian Kemp. Simgapore kemob@nievax.nie.ac.sg
Recipe: (Percent, Batch)
Bainbridge spar 30.0 30.00 Whiting 20.0 20.00 Flint 20.0 20.00 Kaolin 10.0 10.00 Talc theoretical 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
From a University of Georgia class handout on glaze & clay from Andy Nasisse. Original recipe just said "Bainbridge" - assumed to mean Bainbridge soda feldspar.
Recipe: (Percent, Batch)
EPK 5.0 9.60 Custer feldspar 78.8 152.60 Whiting 5.5 10.60 Colemanite 10.7 20.80 ----- -------- Totals: 100.0 193.60
Also add:
Copper carbonate 2.6 5.00 Copper oxide 1.5 3.00 Manganese dioxide 4.1 8.00 Cobalt oxide 2.1 4.00
Comments:
Recipe: (Percent, Batch)
Gerstley borate 11.0 11.00 EPK 5.0 5.00 Custer feldspar 79.0 79.00 Whiting 5.0 5.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 4.0 4.00 Manganese dioxide 4.0 4.00 Cobalt oxide 2.0 2.00
Comments:
I have used the following glaze with an electric kiln and found good results. The glaze 'Reed's Glossy Black' needs to be put on thick and does not seem to run. submitted by: Frank Helme e-mail: fhelme@aol.com
Recipe: (Percent, Batch)
Gerstley borate 11.0 11.00 EPK 5.0 5.00 Custer feldspar 79.0 79.00 Whiting 5.0 5.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 4.0 4.00 Manganese dioxide 6.0 6.00 Cobalt oxide 2.0 2.00 Red iron oxide 1.0 1.00
Comments:
A true glossy black Tested on Dillo White clay at a full ^6. submitted by: Lori Wilkinson e-mail: lorwilk@lookingglass.net WARNING: Manganese fumes starting at low-fire temps and the fumes are TOXIC.
Recipe: (Percent, Batch)
Barnard clay 65.0 65.00 Feldspar 15.0 15.00 Whiting 10.0 10.00 Gerstley borate 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Test fired on Plainsman M340 (an off white clay) in an electric kiln. (I used Gerstley Borate for the Colemanite) Crawls if thick and can be used on greenware!! My tests were on bisque. It's dark brown, more runny, semi-gloss breaking to gloss where thick. BB3 I added 2% Manganese just for fun. This was a more intense version of BB2. Thanks Rob! From Vickie Sproule via clayart email: jsproule@mars.ark.com Kathy Darby sent two recipes, which I've called Darby 1&2
Recipe: (Percent, Batch)
Custer feldspar 34.0 32.00 Strontium carbonate 17.0 16.00 Barnard clay 17.0 16.00 EPK 8.5 8.00 Zinc oxide 8.5 8.00 Silica 7.4 7.00 Gerstley borate 7.4 7.00 ----- -------- Totals: 100.0 94.00
Also add:
Copper oxide 3.2 3.00 Cobalt carbonate 2.1 2.00 Red iron oxide 2.1 2.00
Comments:
From George Bowes
Recipe: (Percent, Batch)
Potash feldspar 43.2 43.21 Kaolin 9.9 9.88 Silica 23.5 23.46 Whiting 11.1 11.11 Gerstley borate 12.3 12.35 ----- -------- Totals: 100.0 100.01
Also add:
Iron oxide 9.9 9.88
Comments:
Shiny black, ok. from Michelle Lowe, potter in the Phoenix desert mishlowe@indirect.com mishlowe@aztec.asu.edu
Recipe: (Percent, Batch)
Gerstley borate 7.5 7.50 Talc theoretical 5.4 5.40 Dolomite 3.3 3.30 Kona F-4 feldspar 16.7 16.70 Neph Sye 32.9 32.90 Whiting 7.1 7.10 Zinc oxide 6.5 6.50 EPK 12.6 12.60 Flint 8.0 8.00 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt oxide 1.0 1.00 Copper oxide 3.0 3.00 Red iron oxide 3.0 3.00 Bentonite 1.0 1.00
Comments:
from Michelle Lowe, potter in the Phoenix desert mishlowe@indirect.com mishlowe@aztec.asu.edu
Recipe: (Percent, Batch)
Magnesium carbonate 5.4 5.40 Whiting 7.9 7.90 Zinc oxide 6.0 6.00 Nepheline syenite 40.8 40.80 Kaolin 16.8 16.80 Silica 9.6 9.60 Frit 3134 13.6 13.60 ----- -------- Totals: 100.0 100.10
Also add:
Cobalt oxide 1.0 1.00 Copper oxide 3.0 3.00 Red iron oxide 3.0 3.00 Bentonite 1.0 1.00
Comments:
from Michelle Lowe, potter in the Phoenix desert mishlowe@indirect.com mishlowe@aztec.asu.edu
Recipe: (Percent, Batch)
Barnard clay 36.4 36.40 Frit 5301 54.5 54.50 Zinc oxide 9.1 9.10 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.7 2.70
Comments:
From a University of Georgia class handout on glaze & clay from Andy Nasisse. Can be used on greenware.
Recipe: (Percent, Batch)
Cornwall Stone 75.0 375.00 Kaolin 10.0 50.00 Whiting 10.0 50.00 Gerstley borate 5.0 25.00 ----- -------- Totals: 100.0 500.00
Also add:
Red iron oxide 9.0 45.00
Comments:
> ClayArt Listserv recipe < If you find this glaze useful, please consider submitting it to the GlazeBase project with full documentation. Use one of the GlazeBase submission formats available on the CeramicsWeb web page. Originally specified Conish stone. comments: Semi matt jet black, no breaking to rust. ok. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Kentucky ball clay 7.0 7.00 Redart 86.0 86.00 Silica 7.0 7.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 8.8 8.80 Cobalt carbonate 7.0 7.00 Manganese dioxide 64.0 64.00
Comments:
Dull satin black with a bronz cast. Tested on Dillo White clay at a full ^6. submitted by: Lori Wilkinson e-mail: lorwilk@lookingglass.net NOT for foodware.
Recipe: (Percent, Batch)
Nepheline syenite 64.4 65.00 Barium carbonate 34.7 35.00 EPK 1.0 1.00 ----- -------- Totals: 100.0 101.00
Also add:
Copper carbonate 2.0 2.00 Bentonite 1.0 1.00
Comments:
NOT for food surfaces. From Jamie Walker.
Recipe: (Percent, Batch)
Volcanic ash 48.7 48.70 Wollastonite 12.2 12.17 Ball clay 10.4 10.43 Gerstley borate 8.7 8.70 Silica 7.0 6.96 Alberta slip 13.0 13.04 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt carbonate 0.2 0.22
Comments:
kiln type: gas goes a little gray over stoneware, nicely translucent on porcelain. submitted by: John Anthony e-mail: JTRAX@AOL.COM
Recipe: (Percent, Batch)
Custer feldspar 32.5 31.90 Dolomite 2.2 2.20 Whiting 10.0 9.80 Kaolin - theoretical 11.7 11.50 Silica 29.4 28.90 Frit 3134 14.2 13.90 ----- -------- Totals: 100.0 98.20
Also add:
Cobalt carbonate 0.2 0.20
Comments:
kiln type: gas goes a little gray over stoneware, nicely translucent on porcelain. submitted by: John Anthony e-mail: JTRAX@AOL.COM
Recipe: (Percent, Batch)
Nepheline syenite 20.0 20.00 Whiting 20.0 20.00 EPK 20.0 20.00 Silica 20.0 20.00 Ferro frit 3124 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00 Cobalt carbonate 5.0 5.00
Comments:
It is a nice, dark cobalt blue--Satin to glossy. I have to soak on medium for about 2 hrs. after the kiln sitter goes off to get it to smooth out. submitted by: Cindy P Russell e-mail: crussel@tenet.edu
Recipe: (Percent, Batch)
Nepheline syenite 20.0 20.00 Whiting 20.0 20.00 EPK 20.0 20.00 Silica 20.0 20.00 Ferro Frit 3124 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00 Cobalt carbonate 5.0 5.00
Comments:
It is a nice, dark cobalt blue--Satin to glossy. I have to soak on medium for about 2 hrs. after the kiln sitter goes off to get it to smooth out. submitted by: Cindy P Russell e-mail: crussel@tenet.edu
Recipe: (Percent, Batch)
Silica 34.7 35.00 EPK 15.8 16.00 Gerstley borate 49.5 50.00 ----- -------- Totals: 100.0 101.00
Also add:
Cobalt oxide 1.0 1.00
Comments:
Recipe: (Percent, Batch)
Custer feldspar 42.3 42.31 EPK 1.9 1.92 Colemanite 19.2 19.23 Whiting 3.8 3.85 Barium Carb 4.8 4.81 Flint 24.0 24.04 Lithium Carb 3.8 3.85 ----- -------- Totals: 100.0 100.01
Also add:
Copper Carb 5.8 5.77 Cobalt oxide 0.9 0.87
Comments:
I am using the following cone 6 recipe, which makes a gorgeous, shiny glaze. It contains only 5 percent barium, so I am hoping it is foodsafe. Does anyone know? Thanks, Ruth Jacobson skyceramic@aol.com
Recipe: (Percent, Batch)
Custer feldspar 22.0 22.00 Gerstley borate 10.0 10.00 Whiting 2.0 2.00 Barium carbonate 2.5 2.50 Flint 16.3 16.30 Frit 3124 8.0 8.00 Nepheline syenite 11.8 11.80 Dolomite 4.1 4.10 Wollastonite 12.3 12.30 EPK 11.0 11.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 4.0 4.00 Cobalt carbonate 4.8 4.80 Lithium carbonate 2.0 2.00
Comments:
Thin application is semi-opaque, thick is opaque. From Valerie Duncan
Recipe: (Percent, Batch)
Custer feldspar 21.9 21.90 EPK 11.5 11.50 Lithium carbonate 3.9 3.90 Whiting 2.3 2.30 Strontium carbonate 3.6 3.60 Silica 23.9 23.90 Frit 3134 32.8 32.80 ----- -------- Totals: 100.0 99.90
Also add:
Copper carbonate 5.8 5.80 Cobalt carbonate 8.8 8.80
Comments:
Thin application is semi-opaque, thick is opaque. From Valerie Duncan
Recipe: (Percent, Batch)
Custer feldspar 36.5 36.60 Gerstley borate 19.4 19.40 OM-4 Ball Clay 11.8 11.80 Talc theoretical 15.1 15.10 Silica 10.8 10.80 Dolomite 6.5 6.50 ----- -------- Totals: 100.0 100.20
Also add:
Zircopax 4.3 4.30 Cobalt carbonate 3.2 3.20
Comments:
We use the second one at cone 6 in reduction, and it gives a beautiful bright purple. I have also done a series of color variations on the base glaze replacing the cobalt. The most promising of those was the one using 6% rutile. It gave a warm tan-yellow. The outstanding quality of the glaze (aside from the purple, of course) is the smooth texture and its reliability. submitted by: Rick Malmgren e-mail: r-malmgren@sjca.edu
Recipe: (Percent, Batch)
Nepheline syenite 47.3 47.30 Colemanite 27.0 27.00 Flint 20.3 20.30 Kaolin 5.4 5.40 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 2.0 2.00 Cobalt oxide 1.0 1.00 Rutile 4.0 4.00
Comments:
I just tried 2 slightly different Floating Blue's last night. One of them is from Clayart database the other from my RISD noteboo RISD Floating Blue is much much nicer, as it has better coverage and less runny, and the blue is accented much better. OMER BERAT ARTUN Institute for Brain and tel: 401 421 2879 (home) Neural Systems, 401 863 3920 (office) Department of Physics 401 863 3494 (fax) Box 1843 Brown University URL: http://www.physics.brown.edu/people/artun Providence RI 02912 e-mail: artun@cns.brown.edu
Recipe: (Percent, Batch)
Nepheline syenite 47.3 47.30 Gerstley borate 27.0 27.00 Silica 20.3 20.30 EPK 5.4 5.40 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 2.0 2.00 Cobalt oxide 1.0 1.00 Milled rutile 4.0 4.00
Comments:
I just tried 2 slightly different Floating Blue's last night. One of them is from Clayart database the other from my RISD notebook RISD Floating Blue is much much nicer, as it has better coverage and less runny, and the blue is accented much better. OMER BERAT ARTUN Institute for Brain and tel: 401 421 2879 (home) Neural Systems, 401 863 3920 (office) Department of Physics 401 863 3494 (fax) Box 1843 Brown University URL: http://www.physics.brown.edu/people/artun Providence RI 02912 e-mail: artun@cns.brown.edu
Recipe: (Percent, Batch)
Nepheline syenite 47.3 47.31 Gerstley borate 27.0 27.00 Silica 20.3 20.30 EPK 5.4 5.40 ----- -------- Totals: 100.0 100.01
Also add:
Red iron oxide 2.0 2.00 Cobalt oxide 1.0 1.00 CMC 1.0 1.00 Rutile (milled) 4.0 4.00
Comments:
I substitute Cobalt Carb 2.0. What caught my eye, was the description of it as slate blue, which doesn't fit my results. So, I picked up the original recipe, and it differs from the one Sharon posted. You might try this version in your tests. It is called Floating Blue...from James Chappell's book, Clay and Glazes. This glaze produces a deep blue-brown background of great depth with lighter mottled blues that seem to float on the surface of the background glaze. The glaze has more of the lighter mottled blues where the application is thickest. Watch thickness near the bottom of the pot. The C.M.C. measurement refers to a premixed CMC and water solution. For the Silica, I use 325 mesh Flint. The rutile, is just powdered rutile from the ceramics supply. It fires best on the light side of cone 6 (standard cone just bending), seems to get greener and more fluid the higher you go. Cone 5 works well, too. I do not find a need for bentonite. The book says to weigh the ingredients very carefully, use distilled water or water that is known to have a low mineral content. Mix then add the CMC solution. Sieve two or three times through a 60 to 80 mesh sieve to thoroughly disperse the cobalt, iron, and rutile. The book warns that the glaze is fickle, and recommends against firing this glaze in the same kiln with glazes that contain copper, chrome, nickel or manganese. Mineral content of the water is an important factor. I have noticed an adverse effect as the author noted, and now fire an entire kiln load of this glaze. The glaze should be stirred occasionally during application because the iron has a tendency to settle. Chappell's Suggested variations: Stipple on additional glaze with brush or apply with sponge for an even more mottled effect. Or: lightly sponge a thin wash of 3 grams of chrome oxide to 100 grams of water plus a tablespoon of CMC over the top to produce a floating blue glaze with subtle green tints. Or: Over the glaze, sponge lightly with a rutile wash consisting of 2 grams rutile per 100g of water for a floating blue glaze with slightly tan crystalline tints on the surface. submitted by: Candice Roeder e-mail: CRoeder1@aol.com source for original recipe: James Chappell
Recipe: (Percent, Batch)
Gerstley borate 30.0 30.00 Silica 30.0 30.00 Dolomite 20.0 20.00 EPK 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
Chrome oxide 2.5 2.50 Cobalt oxide 0.3 0.30
Comments:
submitted by: Cindy Russell e-mail: crussel@tenetedu
Recipe: (Percent, Batch)
Strontium carbonate 30.3 27.50 Nepheline syenite 65.2 59.20 Ball clay 4.5 4.10 ----- -------- Totals: 100.0 90.80
Also add:
Titanium dioxide 4.0 3.60 Cobalt carbonate 0.6 0.50
Comments:
From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 56.0 56.00 Strontium carbonate 23.0 23.00 Lithium carbonate 4.0 4.00 Ball clay 6.0 6.00 Flint 11.0 11.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 4.0 4.00
Comments:
Tested AU Sp '92. Pref. 4% CuCO3 - surface a bit dry. Try with 2, 4, 6, 8% CuCO3. VC ed
Recipe: (Percent, Batch)
Albany slip 60.0 60.00 Frit 5301 40.0 40.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 3.0 3.00 Rutile 4.0 4.00
Comments:
From a University of Georgia class handout on glaze & clay from Andy Nasisse.
Recipe: (Percent, Batch)
Frit 3110 3.0 3.00 Nepheline syenite 18.0 18.00 Whiting 2.0 2.00 Strontium carbonate 25.0 25.00 EPK 14.0 14.00 Flint 38.0 38.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 3.0 3.00
Comments:
2 coats if brushing. Gum recommended for brushing. Runs. From George Bowes. Recalcualted to substitute Strontium for Ba. Variations -- blue = 3-7% Cu chartreuse = .5% Chrome
Recipe: (Percent, Batch)
Volcanic ash 55.0 55.00 Whiting 25.0 25.00 Barium carbonate 10.0 10.00 Kentucky OM #4 10.0 10.00 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt oxide 0.5 0.50
Comments:
(I used 7.5 of Stronium carb in place of the Barium and it worked OK) Lyn lyn peelle
Recipe: (Percent, Batch)
Feldspar 44.0 44.00 Whiting 17.0 17.00 Ball clay 8.0 8.00 China clay 9.0 9.00 Silica 22.0 22.00 ----- -------- Totals: 100.0 100.00
Comments:
translucency: Opaque Cobalt 5% for rich midnight blue. Superpax 10% for bright white, very good color response with on glaze stains. submitted by: Jo Ann Stevens e-mail: jstevens@niagara.com source for original recipe: Emanuel Cooper
Recipe: (Percent, Batch)
Custer feldspar 39.6 39.59 Flint 5.4 5.35 Whiting 14.1 14.08 EPK 11.6 11.57 Zinc oxide 8.2 8.17 Dolomite 0.4 0.44 Colemanite 0.9 0.88 Mount St. Helens Volcanic Ash 19.9 19.92 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt oxide 0.1 0.10
Comments:
5000g recipe Makes 3 gal. Good luck! Wendy from Bainbridge Island WA whampton@aol.com
Recipe: (Percent, Batch)
Strontium carbonate 4.0 4.00 Gerstley borate 20.6 20.80 Whiting 1.5 1.50 Custer feldspar 43.9 44.30 EPK 2.1 2.10 Flint 24.7 24.90 Zinc oxide 3.3 3.30 ----- -------- Totals: 100.0 100.90
Also add:
Tin oxide 7.0 7.10 Rutile 3.1 3.10 Cobalt carbonate 2.6 2.60
Comments:
Recipe: (Percent, Batch)
Gerstley borate 8.5 8.50 Magnesium carbonate 1.9 1.90 Whiting 15.3 15.30 Wood ash 14.5 14.50 Nepheline syenite 15.6 15.60 Kaolin 10.9 10.90 Flint 33.4 33.40 ----- -------- Totals: 100.0 100.10
Also add:
Rutile 1.7 1.70
Comments:
I fired cone 6 oxidation pretty exclusively for five years and worked with many glazes (being a glaze testing maniac). One that I really enjoyed using, for several years (and I still use it occasionally) was a Rutile Pale Blue that has no cobalt in it, yet goes most definitely blue in oxidation. It is a tan mat if it isn't fired high enough and glossy pale translucent blue (almost celadon-like) at temp. Usually crazes... Mishy, enjoying an unusually cold and rainy Sonoran desert Michelle Lowe, potter in the Phoenix desert mishlowe@indirect.com mishlowe@aztec.asu.edu http://www.amug.org/~mishlowe
Recipe: (Percent, Batch)
Albany slip 60.0 60.00 Frit 5301 40.0 40.00 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt carbonate 3.0 3.00
Comments:
From a University of Georgia class handout on glaze & clay from Andy Nasisse.
Recipe: (Percent, Batch)
Gerstley borate 20.5 20.50 Sodium bicarbonate 18.0 18.00 Zinc oxide 19.0 19.00 Kaolin 8.0 8.00 Flint 34.5 34.50 ----- -------- Totals: 100.0 100.00
Also add:
Nickel carbonate 2.0 2.00
Comments:
Clay Times NOv/Dec. 2005 p.51. No firing directions were given, but I assume slow cooling is needed. This is a very high Zn, low Al glaze, and probably is very runny.
Recipe: (Percent, Batch)
Whiting 18.2 18.18 Ferro frit 3124 22.7 22.73 Nepheline syenite 22.7 22.73 Kaolin 13.6 13.64 Flint 13.6 13.64 Zircopax (or Ultrox) 9.1 9.09 ----- -------- Totals: 100.0 100.01
Also add:
Copper carbonate 1.8 1.82 Cobalt carbonate 1.8 1.82 Rutile 4.5 4.55
Comments:
Frank Helme sent me the correct recipe for Blue Spruce. ( I fire with a ^ 7 in sitter) The recipe published in ClayTimes left out the Cobalt Carb. I remixed and retested and it is an improvement over the lime-green (with no copper carbonate). A semi-gloss to glossy texture. The color is a soft blue gray with some visual texture/mottling. I also fire it in a ^ 7 Soda in reduction and its a more intense blue. Good luck! Rafael Molina-Rodriguez rmr3431@dcccd.edu
Recipe: (Percent, Batch)
Custer spar 39.6 39.60 Flint 5.4 5.40 Whiting 14.1 14.10 EPK 11.6 11.60 Zinc oxide 8.2 8.20 Dolomite 0.4 0.40 Colemanite 0.9 0.90 Volcanic ash - Mt. St. Helens 19.9 19.90 ----- -------- Totals: 100.0 100.10
Also add:
Cobalt oxide 0.1 0.10
Comments:
This makes 3 gallons of glaze here are two glazes I have used successfully but not put thru any analysis. I got them at an art studio where I used to take classes. They are better if layered with other glazes. Wendy Hamptonfrom Bainbridge Island WA A
Recipe: (Percent, Batch)
Custer feldspar 39.0 39.00 Silica 9.0 9.00 EPK 7.0 7.00 Whiting 17.0 17.00 Zinc oxide 8.0 8.00 Volcanic ash - Mt. St. Helens 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt oxide 1.5 1.50
Comments:
Good luck! Wendy from Bainbridge Island WA whampton@aol.com
Recipe: (Percent, Batch)
Albany slip 60.0 60.00 Frit 5301 40.0 40.00 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt carbonate 3.0 3.00 Manganese dioxide 2.0 2.00
Comments:
From a University of Georgia class handout on glaze & clay from Andy Nasisse.
Recipe: (Percent, Batch)
Albany slip 47.4 47.37 Potash feldspar 28.4 28.42 Flint 9.5 9.47 Zinc oxide 9.5 9.47 Whiting 5.3 5.26 ----- -------- Totals: 100.0 99.99
Also add:
Rutile 5.3 5.26
Comments:
Rob Wadey (robert wadey ) 9734B - 100 Ave Grande Prairie, Alberta t8V 0T6 Phone: (403) 538-3731 Fax: (403) 538.3732
Recipe: (Percent, Batch)
Nepheline syenite 47.0 47.00 Colemanite 27.0 27.00 EPK 6.0 6.00 Silica 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
I have a simplecone 6 base glaze that exhibits some very fine qualities. Then I add the following coloring agents in given percentages. Zircopax 12% makes the base glaze white Copper Carbonate makes a nice green I suggest you use both of these together and it will give you a nice gloss irredecent green in an oxidation fire. submitted by: Bob Wicks e-mail: BobWicks@aol.com
Recipe: (Percent, Batch)
Dolomite 10.9 10.87 Wollastonite 18.1 18.12 Nepheline syenite 36.2 36.23 EPK 18.1 18.12 Gerstley borate 16.7 16.67 ----- -------- Totals: 100.0 100.01
Comments:
add 5% zircopax and 8% mason st. 6485 for a light, delicate yellow. I use a fairly dark clay body so your results may be quite different. good luck with the yellows. submitted by: Mary Kuilema e-mail: kuil@k2.iserv.net
Recipe: (Percent, Batch)
Nepheline syenite 43.3 43.33 Whiting 20.0 20.00 Lithium carbonate 16.7 16.67 Barium carbonate 5.0 5.00 Gerstley borate 8.3 8.33 Silica 6.7 6.67 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 8.3 8.33 Chrome oxide 0.4 0.42
Comments:
Semi matt mauve, nice. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 20.4 20.43 Silica 10.8 10.75 Barium carbonate 43.0 43.01 Lithium carbonate 5.4 5.38 Kaolin 20.4 20.43 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 7.5 7.53
Comments:
Whoever was looking for a Turquoise Glaze. I have 2 recipes for glazes a pottery teacher gave me. We call them Brilliant Matt Purple and Brilliant Matt Turquoise. They are volatile so be very careful with your kiln shelves. There is Barium Carbonate in the recipes, so they are poisonous whilst in the raw state. Please wear masks and gloves and if possible work at an extractor fan. I just put a normal fan pointing out the window and work behind it. I hear from production potters that Barium can leach thru your skin. Be careful and practise Good Safety Habits. As you can see they both use the same ingredients, but in different proportions. I have a friend / customer (they usually become friends) who is a production potter (with a 200 cubic foot parafin fired kiln), who uses the BMT and is delighted with it. He fires to cone 6 (1200/1220 C)You have to watch your application thickness to get the result you want. We have fired the BMP from 950 C to almost 1300 C with different results but always pleasantly surprised. Do not expect consistancy with these glazes. submitted by: Ralph Loewenthal e-mail: fayralph@sprintlink.co.za
Recipe: (Percent, Batch)
Nepheline syenite 57.3 57.29 Silica 7.3 7.29 Barium carbonate 27.1 27.08 Lithium carbonate 2.1 2.08 Kaolin 6.3 6.25 ----- -------- Totals: 100.0 99.99
Also add:
Copper carbonate 4.2 4.17
Comments:
Firing: firing type: oxidation, reduction Whoever was looking for a Turquoise Glaze. I have 2 recipes for glazes a pottery teacher gave me. We call them Brilliant Matt Purple and Brilliant Matt Turquoise. They are volatile so be very careful with your kiln shelves. There is Barium Carbonate in the recipes, so they are poisonous whilst in the raw state. Please wear masks and gloves and if possible work at an extractor fan. I just put a normal fan pointing out the window and work behind it. I hear from production potters that Barium can leach thru your skin. Be careful and practise Good Safety Habits. As you can see they both use the same ingredients, but in different proportions. I have a friend / customer (they usually become friends) who is a production potter (with a 200 cubic foot parafin fired kiln), who uses the BMT and is delighted with it. He fires to cone 6 (1200/1220 C)You have to watch your application thickness to get the result you want. We have fired the BMP from 950 C to almost 1300 C with different results but always pleasantly surprised. Do not expect consistancy with these glazes. submitted by: Ralph Loewenthal e-mail: fayralph@sprintlink.co.za
Recipe: (Percent, Batch)
Barnard slip 60.0 60.00 Whiting 20.0 20.00 Gerstley borate 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
Rob Wadey (robert wadey) 9734B - 100 Ave Grande Prairie, Alberta t8V 0T6 Phone: (403) 538-3731 Fax: (403) 538.3732
Recipe: (Percent, Batch)
Strontium carbonate 48.8 50.00 Nepheline syenite 48.8 50.00 Gerstley borate 2.4 2.50 ----- -------- Totals: 100.0 102.50
Also add:
Bentonite 2.9 3.00 Copper carbonate 3.9 4.00
Comments:
Thin application = aqua, thick = bronze. Runs if thick, so make thin toward bottom. For a better bronze, apply over a thin application of Lichen Bell's glaze.
Recipe: (Percent, Batch)
Manganese dioxide 60.0 60.00 Copper oxide 10.0 10.00 Redart 20.0 20.00 EPK 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
NOT FOOD SAFE!!! This was very bronze looking. I was amazed. But it is not for food containers. I believe you mentioned that you wanted it for tiles? > > Celia in NC > cwike@conninc.com >Nottingham center for the Arts
Recipe: (Percent, Batch)
Whiting 22.2 22.20 Custer feldspar 49.9 49.90 EPK 13.0 13.00 Flint 6.0 6.00 Zinc oxide 9.0 9.00 ----- -------- Totals: 100.0 100.10
Also add:
Cobalt oxide 0.4 0.40 Copper carbonate 2.7 2.70 Rutile 5.4 5.40
Comments:
from Rick Malmgren in CM
Recipe: (Percent, Batch)
China clay 100.0 100.00 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt oxide 33.0 33.00 Copper oxide 33.0 33.00 Manganese dioxide 266.0 266.00
Comments:
Soft black-gold color. From Glazes Cone 6 by Michael Bailey. NOT food safe.
Recipe: (Percent, Batch)
Red clay 66.7 66.67 China clay 33.3 33.33 ----- -------- Totals: 100.0 100.00
Also add:
Manganese dioxide 200.0 200.00 Black copper oxide 33.3 33.33
Comments:
(fire to cone 7 in sitter) I use Redart and EPK. Note: A thick coat yields best results. rafael molina-rodriguezre: blistering of this type of glazes - I've had the same problem when firing this type of glaze on the bottom of an ancient Paragon High-fire kiln ( square, top-loading ). This kiln has approximately one cone differential from top to bottom. I solved the problem of already fired pieces by refiring them in a hotter zone of the kiln. The blisters disappearred. Now I place all bronze glazed pieces at or near the top.
Recipe: (Percent, Batch)
Ball clay 100.0 100.00 ----- -------- Totals: 100.0 100.00
Also add:
Manganese dioxide 400.0 400.00 Copper carbonate 100.0 100.00
Comments:
(fire to cone 7 in sitter) Note: Thin application for best color. rafael molina-rodriguezre: blistering of this type of glazes - I've had the same problem when firing this type of glaze on the bottom of an ancient Paragon High-fire kiln ( square, top-loading ). This kiln has approximately one cone differential from top to bottom. I solved the problem of already fired pieces by refiring them in a hotter zone of the kiln. The blisters disappearred. Now I place all bronze glazed pieces at or near the top. NOTE: Mn fumes, starting at lowfire temps and the fumes are VERY TOXIC. This is a dangerous glaze to fire - do NOT breathe fumes.
Recipe: (Percent, Batch)
Volcanic ash 46.0 44.79 Spodumene 20.0 19.47 Dolomite 10.0 9.74 Talc theoretical 10.0 9.74 Ball clay 10.0 9.74 Borax 4.0 3.89 ----- -------- Totals: 100.0 97.37
Also add:
Iron chromate 2.7 2.63 Rutile 2.7 2.63 Ilmenite 2.7 2.63
Comments:
(a waxy surfaced, very regular and predictable glaze. Pleasant dark brown with black flecks. Takes overdipping with more reactive glazes very nicely - e.g. the oatmeal. The Borax means it shouldn't be left to hang around too long before being used) Veronica Shelford e-mail: shelford@island.net s-mail: P.O. Box 6-15 Thetis Island, BC V0R 2Y0 Tel: (250) 246-1509
Recipe: (Percent, Batch)
Whiting 18.3 18.35 Custer feldspar 51.4 51.38 EPK 16.5 16.51 Flint 5.5 5.50 Zinc oxide 8.3 8.26 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 6.4 6.42 Red iron oxide 2.1 2.13 Nickel oxide 3.2 3.19
Comments:
I have recently been using a nice matt brown in cone 6 oxidation that looks nice on its own and over many other glazes. It is: Enjoy! Lori Cole Kitchener, Ontario
Recipe: (Percent, Batch)
Silica 37.6 37.63 Nepheline syenite 21.5 21.51 Whiting 16.1 16.13 EPK 14.0 13.98 Gerstley borate 10.8 10.75 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 16.1 16.13
Comments:
kiln type: gas very nice, deep brown with occasional lighter speckling submitted by: John Anthony e-mail: JTRAX@AOL.COM
Recipe: (Percent, Batch)
Alberta slip 62.5 62.50 Gerstley borate 20.8 20.83 Potash feldspar 8.3 8.33 EPK 8.3 8.33 ----- -------- Totals: 100.0 99.99
Also add:
Tin oxide 3.3 3.33
Comments:
This is quite a pleasant sort of mid brown glaze for ^6 oxidation How nice to be able to share something from my books, I have been so pleased with some of the recipes that I have tested from other clayart subscribers. I only wish that I could give proper credit to the originators of these but I am afraid I was amiss in recording such info. Sue on a rainy day in British Columbia - how unusual sue hutchen
Recipe: (Percent, Batch)
Colemanite 50.0 50.00 EPK 20.0 20.00 Flint 30.0 30.00 ----- -------- Totals: 100.0 100.00
Also add:
Manganese dioxide 5.0 5.00 Red iron oxide 10.0 10.00
Comments:
This is a neat brown semi-gloss for cone 6. I beleive it came from CM, June/81 page 78. It is called Rowe brown Frank Simons fsimons@img.net NOTE: Mn fumes starting at lowfire temperatures and fumes are TOXIC.
Recipe: (Percent, Batch)
Albany slip 50.0 50.00 Spodumene 50.0 50.00 ----- -------- Totals: 100.0 100.00
Comments:
Rob Wadey (robert wadey) 9734B - 100 Ave Grande Prairie, Alberta t8V 0T6 Phone: (403) 538-3731 Fax: (403) 538.3732
Recipe: (Percent, Batch)
Kona F-4 feldspar 53.0 53.00 Silica 20.0 20.00 Whiting 15.0 15.00 Barium carbonate 6.0 6.00 EPK 6.0 6.00 ----- -------- Totals: 100.0 100.00
Also add:
Mason Deep Crimson Stain 10.0 10.00
Comments:
I use 4.5 of Strontium in place of Barium. I have had several request for this glaze recipe. It is a cone 6 Oxidation glaze. It is more opaque than some may want. It is satin to semi-glossy. submitted by: Cindy P Russell e-mail: crussel@tenet.edu
Recipe: (Percent, Batch)
A.P. Green fireclay 80.0 80.00 GoldArt 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
Chrome oxide 1.0 1.00 Iron oxide 2.0 2.00
Comments:
I've applied them to bone dry sculptural work, bisqued them and then have rubbed stains or oxides into the recesses, sponging off, then fired again for permanence. They are quite versatile. These recipes are from Zakin's book on Electric Kiln Ceramics. Some of the clays used in the recipe are coarse and the slip should not be strined. The result will be a coarse, sandy-textured surface, not for functional pieces. They may be applied by dipping, spraying or brushing. They may be applied to greenware or bisqued ware. They may be used alone or with stains and glazes. The appearance when fired is soft and sandy. Candice Roeder
Recipe: (Percent, Batch)
Barnard clay 20.0 20.00 Ball clay 26.0 26.00 Wollastonite 30.0 30.00 Gerstley borate 24.0 24.00 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 1.0 1.00
Comments:
A wood-fired surface is another story. I'm not sure it's possible to simulate the wood ash texture in oxidation. The best results I've achieved are from the following: These are nice sufaces, but if you want Richard Aerni-like wood ash texture again I'm not sure it's possible. Good luck! Two years ago I took a part-time job teaching ceramics at Navarro College in Corsicana, Texas. The college has only one kiln. It' an ancient Paragon High Fire. The design is square and toploading with very small cu. ft. It's been a real challenge to develop an attractive palette of clays and glazes for oxidation firing. I do majolica, colored clays, and cone 6 oxidation ( cone 7 in the sitter). Rafael Molina Rmr3431@dcccd.edu
Recipe: (Percent, Batch)
Nepheline syenite 13.0 13.00 Kona F-4 feldspar 13.0 13.00 Dolomite 13.0 13.00 Gillespie borate 13.0 13.00 Spodumene 11.3 11.30 Silica 23.5 23.50 rottenstone 13.0 13.00 ----- -------- Totals: 100.0 99.80
Comments:
A beautiful buttery, satin light yellow. Need to check for stability, surface durability, and over all utility on vertical surfaces. Does very well over light texture. Check over carvings and slip trailing. From Dupre, Marcy M IV LTC RET [mailto:marcy.dupre@us.army.mil]
Recipe: (Percent, Batch)
Custer feldspar 35.0 35.00 Spodumene 12.1 12.10 Talc theoretical 12.5 12.50 Whiting 8.2 8.20 Silica 9.8 9.80 Frit 3134 14.7 14.70 Kaolin - theoretical 7.7 7.70 ----- -------- Totals: 100.0 100.00
Comments:
A beautiful buttery, satin light yellow. Need to check for stability, surface durability, and over all utility on vertical surfaces. Does very well over light texture. Check over carvings and slip trailing. From Dupre, Marcy M IV LTC RET [mailto:marcy.dupre@us.army.mil]
Recipe: (Percent, Batch)
Custer feldspar 44.3 44.30 Spodumene - theoretical 10.9 10.90 Gerstley borate 8.7 8.70 Talc theoretical 12.5 12.50 Whiting 8.8 8.80 Silica 9.9 9.90 Kaolin - theoretical 4.8 4.80 ----- -------- Totals: 100.0 99.90
Comments:
A beautiful buttery, satin light yellow. Need to check for stability, surface durability, and over all utility on vertical surfaces. Does very well over light texture. Check over carvings and slip trailing. From Dupre, Marcy M IV LTC RET [mailto:marcy.dupre@us.army.mil]
Recipe: (Percent, Batch)
Nepheline syenite 46.2 80.00 Whiting 8.7 15.00 Barium carbonate 6.9 12.00 Zinc oxide 6.9 12.00 Kaolin 5.8 10.00 Ball clay 4.6 8.00 Silica 20.8 36.00 ----- -------- Totals: 100.0 173.00
Also add:
Rutile 6.0 10.40 Ochre 3.0 5.20
Comments:
From a University of Georgia class handout on glaze & clay from Andy Nasisse.
Recipe: (Percent, Batch)
Custer feldspar 29.5 29.47 Nepheline syenite 20.0 20.00 Flint 20.0 20.00 Gerstley borate 17.9 17.89 Zinc oxide 5.3 5.26 Whiting 4.2 4.21 Lithium carbonate 3.2 3.16 ----- -------- Totals: 100.0 99.99
Also add:
Manganese dioxide 3.2 3.16 Red iron oxide 2.1 2.11 Zircopax 4.2 4.21
Comments:
(An orangey tinted clear glaze - I like it for stone ginger bottles and other old-timey things) Here are a couple of standards from the Richmond Potters Club, and a few of my own formulation that have worked well in ^6 oxidation. They aren't revolutionary (my exciting ones have things like barium in them, or are less predictable for a classroom situation) but they have been reliable, and allow for some play. They all calculate out to well within the INSIGHT limit formulas for maturity at ^6. If anyone tests these and comes up with problems, new ideas, good variations etc. could they let me know? I'll look forward to a larger list being posted to clayart. Veronica Shelford e-mail: shelford@island.net s-mail: P.O. Box 6-15 Thetis Island, BC V0R 2Y0 Tel: (250) 246-1509
Recipe: (Percent, Batch)
Kona F-4 feldspar 50.0 50.00 Dolomite 15.5 15.50 Magnesium carbonate 6.8 6.80 EPK 15.0 15.00 Flint 9.3 9.30 Frit 3124 3.5 3.50 ----- -------- Totals: 100.0 100.10
Also add:
Tin oxide 4.0 4.00
Comments:
Recipe: (Percent, Batch)
Wollastonite 30.0 30.00 Ferro Frit 3134 21.5 21.50 Kaolin 25.5 25.50 Calcined kaolin 19.0 19.00 Silica 4.0 4.00 ----- -------- Totals: 100.0 100.00
Comments:
part of a series I did to produce a saturated calcia matte glaze using wollastonite instead of whiting. Note you need to split the kaolin with calcined kaolin. If you don't the glaze will shrink too much and crack during drying, then crawl during firing. You can make your own calcined kaolin by bisque firing a planter full of raw kaolin. Remember to use 12% less calcined because of the LOI. I also tried high alumina low silica and sure enough, that gives a matte too, just like the textbooks say. However the best results came with both high CaO and high Al2O3 as follows: (this is still under development) submitted by: Tony Hansen email: thansen@mlc.awinc.com
Recipe: (Percent, Batch)
Strontium carbonate 5.3 5.18 Whiting 9.8 9.60 Zinc oxide 10.6 10.41 Custer feldspar 74.4 73.08 ----- -------- Totals: 100.0 98.27
Also add:
Copper carbonate 1.0 0.99 Rutile 6.1 6.02
Comments:
Ceramic Mo May 2000 p.101. Untested w/SrCO3. Orig is 6.91 BaCO3
Recipe: (Percent, Batch)
Kona F-4 feldspar 38.0 38.00 Whiting 14.0 14.00 Zinc oxide 12.0 12.00 Kentucky OM #4 6.0 6.00 Flint 30.0 30.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00 Copper carbonate 0.5 0.50
Comments:
Note: Leah Leitson glaze. You can use as a clear glaze minus the copper carb or add approx. 10% any mason stain for high colors. Watch the zinc ox because it will change some of the Mason stain colors. Read the info on Mason stain chart. Mckenzie Smith Variations -- Blue:Copper carb 1.0 Light celadon Copper carb 0.25
Recipe: (Percent, Batch)
Colemanite 61.2 61.20 EPK 8.2 8.20 Whiting 2.0 2.00 Silica 28.6 28.60 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 2.0 2.00 Bentonite 2.0 2.00
Comments:
Here is a CEladon, works well a bit runny though. from omer artun
Recipe: (Percent, Batch)
Potash feldspar 62.2 62.24 Whiting 7.6 7.61 China clay 5.0 4.97 Silica 25.2 25.18 ----- -------- Totals: 100.0 100.00
Also add:
Black iron oxide 1.5 1.52
Comments:
Original recipe called for limestone, substituted whiting, although using dolomite might be better. Add 2% Barium Carbonate for bluish celadon. Also can substitute red iron oxide for the black to get a yellow green celadon. submitted by: GURUSHAKTI@aol.com
Recipe: (Percent, Batch)
Volcanic ash 48.7 48.70 Wollastonite 12.2 12.20 Ball clay 10.4 10.40 Gerstley borate 8.7 8.70 Silica 7.0 7.00 Alberta slip 13.0 13.00 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt carbonate 0.2 0.20
Comments:
kiln type: gas goes a little gray over stoneware, nicely translucent on procelain. submitted by: John Anthony e-mail: JTRAX@AOL.COM
Recipe: (Percent, Batch)
Custer feldspar 32.6 32.60 Wollastonite 11.1 11.10 Dolomite 2.4 2.40 Kaolin - theoretical 6.8 6.80 Silica 22.1 22.10 Frit 3124 25.0 25.00 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt carbonate 0.2 0.20
Comments:
kiln type: gas goes a little gray over stoneware, nicely translucent on procelain. submitted by: John Anthony e-mail: JTRAX@AOL.COM
Recipe: (Percent, Batch)
Soda feldspar 50.0 50.00 Wollastonite 20.0 20.00 China clay 10.0 10.00 Silica 10.0 10.00 Gerstley borate 10.0 10.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 0.5 0.50
Comments:
I've been using a Cone 6-9 oxidation Faux Celadon glaze on porcelain (Standard Ceramics). It looks quite a bit like a real celadon except a bit darker. It was fine until about a year ago when I started getting pinholes AND there would be a slight crawling in some places on the pot. The pot needed to be refired each time, then the crawling healed. I tried applying the glaze more thinly, but that didn't matter, I still got the strange bald spots. Thinking it might be oil or dirt on the surface, I went over each surface with a dry Scrubbie, then wiped them down with a damp sponge. I still had bald spots. Pinholes appeared on the bottom of the pots. (My pots have carved feet which raise the bottoms of the pots and the bottoms get glazed.) For a while I thought it was just me, but a colleague of mine used the same batch of glaze and had the same problem. submitted by: Sandy e-mail: SANDRA@ICICB.NCI.NIH.GOV Recipe calls for an addition of Black Stain 0.2
Recipe: (Percent, Batch)
Colemanite 61.2 61.22 EPK 8.2 8.16 Whiting 2.0 2.04 Silica 28.6 28.57 ----- -------- Totals: 100.0 99.99
Also add:
Red iron oxide 2.0 2.04 Bentonite 2.0 2.04
Comments:
Here is a CEladon, works well a bit runny though. from omer artun
Recipe: (Percent, Batch)
Nepheline syenite 54.5 54.50 Whiting 9.9 9.90 EPK 5.9 5.90 Flint 22.8 22.80 Talc theoretical 6.9 6.90 ----- -------- Totals: 100.0 100.00
Comments:
Lovely. Crazes. Very high alkaline glaze. This is the original Kawaii Celadon formula and revising to Cone 6. There is no Talc in the original glaze. Glaze Type: Ca Na Mg Celadon. Opacity: . Firing type: Reduction .
Recipe: (Percent, Batch)
Gerstley borate 21.0 21.00 Wollastonite 8.0 8.00 Nepheline syenite 30.0 30.00 Kaolin 10.0 10.00 Silica 31.0 31.00 ----- -------- Totals: 100.0 100.00
Comments:
submitted by: Iain Begg e-mail: begg@MPRGATE.MPR.CA Variations -- for celadon add cobalt carbonate 0.125% and chrome oxide 0.125%. teal blue add cobalt carbonate 0.5% and chrome oxide 0.3%, teal green add cobalt carbonate 0.5% and chrome oxide 0.5%.
Recipe: (Percent, Batch)
Custer feldspar 46.3 46.30 Flint 19.7 19.70 EPK 2.4 2.40 Whiting 8.2 8.20 Gerstley borate 13.6 13.60 Zinc oxide 3.9 3.90 Dolomite 5.9 5.90 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 0.2 0.20
Comments:
Mottled thick. Variations -- Copper Carb .28 Nice faux blue celedon glaze. Pretty shiny. Rich plum- 9 Red Degusa stain .25 Cobalt Carb. Shiny red- 9 Red Degusa stain
Recipe: (Percent, Batch)
Spodumene 51.0 51.00 Gerstley borate 26.0 26.00 Silica 23.0 23.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 5.0 5.00 Red iron oxide 0.5 0.50 Bentonite 1.0 1.00
Comments:
I was looking for something like Warren MacKenzie's Glassy Green that would fire at ^6 instead of ^4. The Boron Lithium in Chappel's glaze book looked close so I added the same oxides as MacKenzie uses in his ^4. MacKenzie doesn't use his ^4 anymore, but found a ^1 glassy green he uses instead. This is also a nice transparent ^6 without colorants. submitted by: Lee Love e-mail: leelove@mill2.MillComm.COM
Recipe: (Percent, Batch)
Lithium carbonate 1.0 1.00 Strontium carbonate 20.0 20.00 Nepheline syenite 60.0 60.00 OM-4 Ball Clay 10.0 10.00 Flint,325 mesh 9.0 9.00 ----- -------- Totals: 100.0 100.00
Also add:
Manganese dioxide 2.0 2.00 Copper carbonate 5.0 5.00
Comments:
For my black I added these colorants, rather than those above: Chrome.......1.14 Cobalt Carb 4.55 Red Iron Ox..3.41 I am having a problem with a glaze. It is a cone 6 oxidation glaze, charcoal variation of Pinnell Strontium Matt Glaze. I am trying to achieve a (cobalt)bla variation, rather than the greenish black that the Charcoal version produces. I took colorants from a favorite black glaze recipe and used those percentages i Strontium Matt base. The results were black, but very dry and underfired lookin fire this glaze to cone 7, BTW) Could the colorants I added have a refractory effect, and if so, how do I correc problem? Any ideas? I'd appreciate help on this one. Thanks. Candice Roeder croeder@worldnet.att.net living in the sticks in Michigan
Recipe: (Percent, Batch)
Gerstley borate 3.0 3.00 Magnesium carbonate 3.0 3.00 Whiting 22.0 22.00 Nepheline syenite 23.0 23.00 Kaolin 20.0 20.00 Flint 29.0 29.00 ----- -------- Totals: 100.0 100.00
Comments:
From Elyse Burja. Based on Dixon Satin. Variations -- Chartreuse: 8% Drakenfield yellow (bright yellow stain) + 0.5% copper carb Deep Plum: + 10% Standard Ceramics Orchid stain Deep Purple-blue: + 8% Royal purple (Standard Ceramics).
Recipe: (Percent, Batch)
Dolomite 6.6 6.63 Whiting 19.1 19.13 Nepheline syenite 23.0 23.01 Kaolin - theoretical 16.7 16.74 Silica 28.8 28.78 Frit 3195 5.7 5.71 ----- -------- Totals: 100.0 100.00
Comments:
From Elyse Burja Variations -- Chartreuse: 8% Drakenfield yellow (bright yellow stain) + 0.5% copper carb Deep Plum: + 10% Standard Ceramics Orchid stain Deep Purple-blue: + 8% Royal purple (Standard Ceramics).
Recipe: (Percent, Batch)
Custer feldspar 50.7 50.72 Gerstley borate 24.6 24.64 Barium carbonate 17.4 17.39 Zinc oxide 7.3 7.25 ----- -------- Totals: 100.0 100.00
Comments:
plus as much local dark red clay as I can get into it. Then I layer over it with the same glaze without the clay. This gets a highly pitted chocolate cake look with a cratered & pinholed glossy surface. I don't like any of the above glazes inside a bowl. I kinda like more of a feldspathic glaze for eating/drinking surface. I'm not taking responsibility for anyone using these glazes, etc. Something is probably toxic. They are examples of my research and they work out in formulation. Which is what they are examples of. So go formulate your own non-toxic glazes, if that is possible. It's probably bad for the environment too. Email me with questions as to household performance, as that may be indicative of other problems. The badly crazed surfaces are not considered to be a continous-non porous sanitary surfaces. Eric Hansen, Lawrence, Kansas wabi_sabi@mailexcite.com
Recipe: (Percent, Batch)
Ocmulgee 50.0 50.00 Pine Lake 15.0 15.00 GoldArt 15.0 15.00 Ball clay 10.0 10.00 Barnard clay 10.0 10.00 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 3.0 3.00 Grog 6.0 6.00
Comments:
Recipe: (Percent, Batch)
Custer feldspar 28.1 25.00 Ball clay 20.2 18.00 Fire clay 12.4 11.00 Velvacast 23.6 21.00 Pyrophyllite 2.2 2.00 Silica 13.5 12.00 ----- -------- Totals: 100.0 89.00
Also add:
Grog, fine 1.1 1.00
Comments:
Calls for FC 340 Ball Clay, Greenstripe fireclay. From Jonathan Kaplan. Oct. 2012 CM. Start with 30% water adn adjust to specific gravity of 1.78. Start with .35% Darvan 811 and adjust until the correct deflocculation is achieved. Cast a small test sample and time for optimum thickness to determine if viscosity and spec. gravity good.
Recipe: (Percent, Batch)
Kentucky OM #4 25.0 25.00 Nepheline syenite 12.5 12.50 Custer feldspar 25.0 25.00 Flint 17.5 17.50 EPK 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
For 10,000 gram batch, 3,500 grams water, 10 grams soda ash, 58 grams sodium silicate. I recently learned to sieve after mixing. it is abit grey/white in green state, slightly off white fired to temperature. this is basically and adaptation of Michael corney's cone 9 to 11. Bob Bruch rsb8@po.cwru.edu
Recipe: (Percent, Batch)
Grolleg 29.7 15.00 EPK 5.9 3.00 Tennessee #1 13.9 7.00 Custer feldspar 16.8 8.50 Nepheline syenite 16.8 8.50 Flint 16.8 8.50 ----- -------- Totals: 100.0 50.50
Comments:
Recipe is in pounds. + Water 20 lbs. + 62 GRAMS sodium silicate. Add sodium silicate to water first, then add clay, NS, and flint and custer last. From Molly Hatch.
Recipe: (Percent, Batch)
Custer feldspar 20.0 20.00 GoldArt 15.0 15.00 Redart 5.0 5.00 Kaolin 29.0 29.00 Ball clay 15.0 15.00 Flint 16.0 16.00 ----- -------- Totals: 100.0 100.00
Also add:
Darvan 7 0.7 0.70
Comments:
For easy weighing of Darvan add to last 500 gms of water. From Colleen colleens@erols.com
Recipe: (Percent, Batch)
Kentucky OM #4 25.0 25.00 EPK 18.0 18.00 Tile 6 clay 5.0 5.00 Nepheline syenite 35.0 35.00 Custer feldspar 9.0 9.00 Frit 3110 1.0 1.00 Flint 7.0 7.00 ----- -------- Totals: 100.0 100.00
Comments:
From Forrest Gard. Plus water 42, sodium silicate 0.25-.5. Forrest uses Darvan.
Recipe: (Percent, Batch)
GoldArt 21.0 21.00 Tennessee ball clay 10.0 10.00 EPK 12.0 12.00 Custer feldspar 26.0 26.00 Whiting 1.0 1.00 Flint 30.0 30.00 ----- -------- Totals: 100.0 100.00
Comments:
Add 199 ml sodium silicate + 199 ml Darvan and 41.7 lbs water
Recipe: (Percent, Batch)
Kentucky OM #4 25.0 25.00 Nepheline syenite 10.0 10.00 Custer feldspar 25.0 25.00 Flint 15.0 15.00 EPK 25.0 25.00 ----- -------- Totals: 100.0 100.00
Also add:
Sodium silicate 0.6 0.58 Soda ash 0.1 0.10
Comments:
Add water 35%. Weigh water. Add deflocculants and mix 5 minutes. Add OM$, add Neph sy, add flint, slowly add EPK. Mix 1 hour and adjust. From Kelly Palmer at Cleveland Inst of Art.
Recipe: (Percent, Batch)
Talc 5.0 5.00 Nepheline syenite 30.0 30.00 EPK 23.0 23.00 Kentucky OM #4 22.0 22.00 Flint 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
Barium carbonate 0.0 0.03 Soda ash 0.0 0.03 Sodium silicate 0.3 0.25
Comments:
Start 38% water, then add more if required. From Paul Rozman in CM.
Recipe: (Percent, Batch)
PBX 33.3 20.00 Pine Lake 16.7 10.00 A.P. Green 25.0 15.00 Wollastonite 25.0 15.00 ----- -------- Totals: 100.0 60.00
Also add:
Molochite 8.3 5.00 Grog 41.7 25.00 Red iron oxide 2.5 1.50
Comments:
via Jamie McKinnon.It calls for Fiberous Wollastonite, not powedered. Wet to fired shrinkage 8%. Can add more grog to total of 30% in mixed particle sizes. Color cited as deep cinnamon.
Recipe: (Percent, Batch)
Tile 6 clay 20.0 20.00 EPK 15.0 15.00 Kentucky OM #4 20.0 20.00 GoldArt 25.0 25.00 Nepheline syenite 10.0 10.00 Flint 10.0 10.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00
Comments:
Recipe: (Percent, Batch)
GoldArt 30.0 30.00 Pine Lake 30.0 30.00 Ocmulgee 40.0 40.00 ----- -------- Totals: 100.0 100.00
Comments:
Recipe: (Percent, Batch)
EPK 22.2 20.00 Tile 6 clay 16.7 15.00 Feldspar 38.9 35.00 Silica 22.2 20.00 ----- -------- Totals: 100.0 90.00
Also add:
Bentonite 3.3 3.00
Comments:
From CAD online. Jeff Campana's porcelain. Silica is listed at 325 mesh
Recipe: (Percent, Batch)
Grolleg 25.8 25.00 EPK 18.6 18.00 Ball clay 6.2 6.00 Nepheline syenite 33.0 32.00 Flint 16.5 16.00 ----- -------- Totals: 100.0 97.00
Also add:
Bentonite 2.6 2.50
Comments:
Smooth, white, translucent @ cone 7. From Molly Hatch.
Recipe: (Percent, Batch)
Tennessee ball clay 25.0 25.00 Tile 6 clay 25.0 25.00 Silica 25.0 25.00 Custer feldspar 25.0 25.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 1.0 1.00
Comments:
soak bentonite in water before adding.
Recipe: (Percent, Batch)
Tennessee ball clay 23.7 22.00 Tile 6 clay 10.8 10.00 EPK 10.8 10.00 Nepheline syenite 35.5 33.00 G-200 feldspar 9.7 9.00 Silica 9.7 9.00 ----- -------- Totals: 100.0 93.00
Comments:
From Don Davis Variations -- add 2% V-gum T
Recipe: (Percent, Batch)
Wollastonite 3.0 3.00 Nepheline syenite 14.0 14.00 Ball clay 25.0 25.00 GoldArt 25.0 25.00 Redart 25.0 25.00 Flint 8.0 8.00 ----- -------- Totals: 100.0 100.00
Comments:
From Paul Rozman in CM. Note the neph sy will deflocculate the body.
Recipe: (Percent, Batch)
GoldArt 30.0 30.00 Pine Lake 15.0 15.00 Kentucky OM #4 20.0 20.00 Ocmulgee 25.0 25.00 Talc theoretical 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Recipe: (Percent, Batch)
Kentucky ball clay 80.0 64.00 Kaolin 13.8 11.00 Custer feldspar 3.1 2.50 Flint 3.1 2.50 ----- -------- Totals: 100.0 80.00
Also add:
Grog 15.0 12.00 sand 10.0 8.00
Comments:
specifies fine grog and fine sand
Recipe: (Percent, Batch)
Redart 30.0 30.00 GoldArt 20.0 20.00 Ball clay 20.0 20.00 Silica 20.0 20.00 Custer feldspar 10.0 10.00 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 2.0 2.00 Grog 10.0 10.00
Comments:
Recipe: (Percent, Batch)
Ocmulgee 15.0 15.00 GoldArt 14.0 14.00 Redart 14.0 14.00 XX Sagger 13.0 13.00 Flint 12.0 12.00 Kentucky OM #4 11.0 11.00 Custer feldspar 11.0 11.00 Tile 6 clay 10.0 10.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 3.0 3.00
Comments:
Warm brown, good thermal shock resistance, good for throwing and handbuilding. Revised by Larry Bush. Variations -- + handful Epsom salts
Recipe: (Percent, Batch)
Tile 6 clay 20.0 50.00 Tennessee #10 ball clay 20.0 50.00 Mahavir Feldspar 20.0 50.00 Nepheline syenite 20.0 50.00 Flint 20.0 50.00 ----- -------- Totals: 100.0 250.00
Comments:
From Jeff Campana Brute 32 No Weigh! Casting Slip (cone 6) 11 gallons distilled water (35%) One pint Darvan 7 (hold some back to ensure no overdeflocculation occurs, add as needed to thin)(.5%) 1 bag Tile #6 Kaolin (20%) 1 bag Tennessee #10 Ball Clay (20%) 1 bag Mahavir Potash Feldspar (the new G-200) (20%) 1 bag Nepheline Syenite (20%) 1 bag Flint (20%) If working big, add up to 1/2 bag pyrophyllite and accompanying extra water. (5-10%) Perfect at 1.75 g/ml and 35-40 seconds run from a Ford Cup style viscometer. It is not translucent and is decently but not blindingly white. Casts fast, releases fast, and is plastic enough to alter without crumbles. Perfect shop slip for midrange group studios. Enjoy! Variations -- It is perfect at 20,000g in a five gallon, so 4000g of each ingredient, and 100g of Darvan, 7000g water. 1000-2000g pyrophyllite if you want to add that.
Recipe: (Percent, Batch)
Nepheline syenite 12.5 12.50 Custer feldspar 25.0 25.00 Flint 17.5 17.50 EPK 20.0 20.00 Kentucky OM #4 25.0 25.00 ----- -------- Totals: 100.0 100.00
Comments:
Adapted from M Corney's cone 10 casting slip. 10,000 gm batch: 3,500 water, 10 gms soda ash, 58 gms sodium silicate.
Recipe: (Percent, Batch)
Tile 6 clay 20.0 20.00 EPK 10.0 10.00 XX Sagger 20.0 20.00 Kentucky ball clay 10.0 10.00 Kona F-4 feldspar 20.0 20.00 Flint 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00 Macaloid 1.0 1.00
Comments:
NOt translucent. Throws like porcelain.
Recipe: (Percent, Batch)
Grolleg 50.0 50.00 Kona F-4 feldspar 25.0 25.00 Pyrax 13.0 13.00 Flint 12.0 12.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00 Macaloid 2.0 2.00
Comments:
Recipe: (Percent, Batch)
EPK 20.0 20.00 Grolleg 20.0 20.00 Kentucky OM #4 5.0 5.00 Nepheline syenite 30.0 30.00 Gerstley borate 5.0 5.00 Flint 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 3.0 3.00
Comments:
From the Studio Potter web site. Not too plastic. Fire to C/6 for translucency. Note: neph sy will badly deflocculate this body and cause working and drying problems. Also from Molly Hatch.
Recipe: (Percent, Batch)
EPK 19.8 20.00 Tile 6 clay 19.8 20.00 GoldArt 13.9 14.00 XX Sagger 9.9 10.00 A.P. Green 9.9 10.00 Custer feldspar 13.9 14.00 Talc 3.0 3.00 Flint 9.9 10.00 ----- -------- Totals: 100.0 101.00
Also add:
Bentonite 3.0 3.00
Comments:
Recipe: (Percent, Batch)
Silica 31.0 31.00 Nepheline syenite 30.0 30.00 Gerstley borate 21.0 21.00 EPK 10.0 10.00 Wollastonite 8.0 8.00 ----- -------- Totals: 100.0 100.00
Comments:
kiln type: gas Color: clear in oxidation, greyish in reduction submitted by: John Anthony e-mail: JTRAX@AOL.COM
Recipe: (Percent, Batch)
Silica 31.0 31.00 Nepheline syenite 30.0 30.00 Gerstley borate 21.0 21.00 EPK 10.0 10.00 Wollastonite 8.0 8.00 ----- -------- Totals: 100.0 100.00
Comments:
kiln type: gas Color: clear in oxidation, greyish in reduction submitted by: John Anthony e-mail: JTRAX@AOL.COM
Recipe: (Percent, Batch)
Gerstley borate 21.0 21.00 Wollastonite 8.0 8.00 Nepheline syenite 30.0 30.00 Kaolin 10.0 10.00 Silica 31.0 31.00 ----- -------- Totals: 100.0 100.00
Comments:
I've been using this on underglaze decorated porcelain though recommendations stated that it fits most stoneware bodies. It gives a nice smooth clear finish. There has been some minor crazing on ^10 porcelain fired to ^6, but little to no problems on ^6 porcelain fire to ^6, for obvious reasons of clay maturity. I'm also curious whether it scratches easily. submitted by: Carol Durnford e-mail: durnford@selway.umt.edu source for original recipe: Ceramics Monthly
Recipe: (Percent, Batch)
Ferro Frit 3134 50.0 50.00 EPK 30.0 30.00 Silica 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
It didn't craze but the colors were not quite as bright as others but it is a nice glaze and subing Ferro frit 3124, I found a nice clear matt. I hope these help. They're all I could find. Joyce Basking in the sun in the Mojave joyce lee, jim lee
Recipe: (Percent, Batch)
Flint 26.0 26.00 Kona F-4 spar 32.0 32.00 Wollastonite 6.0 6.00 Kentucky OM #4 10.0 10.00 Pemco frit P-54 16.0 16.00 Whiting 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
In response to questions about cone 5-6 clear glazes crazing over underglazes...I am ever tweaking this recipe, which is coming closer to a no-craze, nice soft surface on Hagi porcelain. It is still not perfect with the tiniest evidence of crazing where thick, and I'll continue to work with it, suggestions welcome. In the meantime, Laguna's MS-29 crazes NOT, but its limitations aside from cost and unknown recipe is in developing a rich color pallette. Curt Huddleston joyce lee, jim lee
Recipe: (Percent, Batch)
F-4 feldspar 45.5 45.50 Flint 20.0 20.00 Gerstley borate 13.3 13.30 Whiting 8.3 8.30 Dolomite 6.4 6.40 Zinc oxide 4.0 4.00 EPK 2.5 2.50 ----- -------- Totals: 100.0 100.00
Comments:
Good with stains & oxides except pinks and purples and colors w chrome. Apply 2 coats if brushed for colors, 1 for clear. Use gum if brushing (e.g. Amaco pre-mix). From George Bowes. Variations -- Molly Hatch colors: Coke Bottle Clear: +.25% RIO + .2% Cu carb
Recipe: (Percent, Batch)
Custer feldspar 28.2 28.20 Silica 15.1 15.10 Dolomite 8.3 8.30 Whiting 5.5 5.50 Zinc oxide 3.9 3.90 Tile 6 clay 13.0 13.00 Frit 3134 25.9 25.90 ----- -------- Totals: 100.0 99.90
Comments:
Good with stains & oxides except pinks and purples. Apply 2 coats if brushed for colors, 1 for clear. Use gum if brushing (e.g. Amaco pre-mix). From George Bowes. Variations -- Light green- 5 drakenfield yellow, 4 rutile, 1 copper carb
Recipe: (Percent, Batch)
Custer feldspar 37.5 39.00 Dolomite 11.5 12.00 Whiting 7.7 8.00 Zinc oxide 4.8 5.00 Frit 3134 34.6 36.00 Flint 2.9 3.00 Lithium carbonate 1.0 1.00 ----- -------- Totals: 100.0 104.00
Comments:
Good with stains & oxides except pinks and purples. Apply 2 coats if brushed for colors, 1 for clear. Use gum if brushing (e.g. Amaco pre-mix). From George Bowes. Catherine Boswell test to eliminate crazing.
Recipe: (Percent, Batch)
Gerstley borate 50.0 50.00 EPK 15.0 15.00 Flint 35.0 35.00 ----- -------- Totals: 100.0 100.00
Comments:
Nice clear, when applied thicker it gets milky. sue hintzVariations -- .5% cobalt makes a nice transparent blue.
Recipe: (Percent, Batch)
F-4 spar 40.0 40.00 Gerstley borate 30.0 30.00 Ball clay 20.0 20.00 Silica 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
This glaze is incredibly forgiving - doesn't show drips, overdips, differences in thickness, is glassy clear w/o yellow, and doesn't craze. It only has 4 ingredients, too. I use this over slips and underglazes and it's fine. I also use lusters over it with great results. What can I say? This is THE PERFECT clear glaze. Laura in Oregon (robert speirs, m.d. 766 x4450 )
Recipe: (Percent, Batch)
Custer feldspar 40.0 40.00 Gerstley borate 30.0 30.00 Kentucky OM #4 20.0 20.00 Flint 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Results beautiful except my blue (cobalt) slip went black under this clear. Slip applied to leather-hard piece, bisqued, then dipped in clear. Anybody with an answer to whats happening? Is the iron in the OM-4 ball clay joining the cobalt to make black? I hate to have to abandon this glaze because, like me, its so cheap and simple. Dale McCleskey, Nashville, TN, USA, Confused.
Recipe: (Percent, Batch)
Gerstley borate 20.0 20.00 Wollastonite 10.0 10.00 Nepheline syenite 30.0 30.00 EPK 10.0 10.00 Silica (325m) 30.0 30.00 ----- -------- Totals: 100.0 100.00
Comments:
For 2 years I struggled with this concept & finally gave up. The fuel savings (?) were not worth the effort. The results don't compare to ^10. I agree with Peter Pinnell- sell another mug to pay for the difference in firing costs. add- 10% iron for temmoku or- 2% tin oxide & 1% copper carb. for red Due to the lower sintering point of ^6 glazes- you have to start reduction fairly early- at least by stoneware standards. Try ^010 as a starting point & go from there. I also used a clay body that had a higher iron content than my present ^10 body- it seemed to make a difference. submitted by: Tom Gray e-mail: tgraypots@atomic.net
Recipe: (Percent, Batch)
Frit 3134 20.0 20.00 G-200 feldspar 20.0 20.00 Wollastonite 20.0 20.00 EPK 20.0 20.00 Flint 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
From Kristen Kieffer - her color suggestions above. Also used by Kyla Toomey. Kyla says: This is a fairly common recipe, but you will often see it with custer rather than the G-200, I've found the custer makes it a bit more iridescent/milky when thick. I fire in electric kilns with a 7 or 8 in the kiln sitter, but I do use it with my class and fire it with a 6 in the sitter and it is reliable as long as it is applied thin and even. Variations -- Cadet #6302 2-5% Blackberry #6381 3-8% Turquoise #6364 2-6% Deep Salmon #6031 3-5% Black Nickel 1-2% Golden Ambrosia #6129 5% Amethyst 3-5% Peacock #6396 2-4% Saturn Orange #6121 3-5% Fawn #6104 5-8%
Recipe: (Percent, Batch)
Gerstley borate 50.0 50.00 Kaolin 17.5 17.50 Flint 32.5 32.50 ----- -------- Totals: 100.0 100.00
Comments:
works well over over slips Joan Slack-DeBrock/River Run Pottery P.O.Box 95 McNaughton, WI 54543 715-277-2773 riverrun@newnorth.net
Recipe: (Percent, Batch)
Nepheline syenite 47.0 47.00 Colemanite 27.0 27.00 EPK 6.0 6.00 Silica 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
I have a simple cone 6 base glaze that exhibits some very fine qualities. submitted by: Bob Wicks e-mail: BobWicks@aol.com Variations -- Zircopax 12% makes the base glaze white Copper Carbonate makes a nice green I suggest you use both of these together and it will give you a nice gloss irredecent green in an oxidation fire.
Recipe: (Percent, Batch)
Frit 3110 10.9 10.60 Frit 3124 4.0 3.90 Spodumene 14.9 14.50 Grolleg 7.9 7.70 Barium carbonate 23.3 22.70 Zinc oxide 8.4 8.20 Silica 30.7 30.00 ----- -------- Totals: 100.0 97.60
Also add:
Zircopax 1.0 1.00 Veegum T 1.4 1.40 Copper carbonate 0.0 0.02 CMC 0.4 0.40
Comments:
Calls for low-iron spodumene. 2 coats best - let dry between. Slow fire toward the end. CMC needed especially for erbium for good suspension. Copper carb used to preserve CMC. A bit runny at C5, but clear. C8 stable but not as transparent as C6. Barium has a positive effect on lanthide color solubility and gives more lusterous glazes. This glaze has been tested and fired as stated there is no Ba leaching. From David Pier. Variations -- Pink Lemonade + Erbium oxide 8.2 Lime Candy + praseodymium oxide 7 Grape Candy + neofymium oxide 5.5
Recipe: (Percent, Batch)
Wollastonite 19.9 19.90 Kona F-4 feldspar 43.4 43.40 EPK 16.8 16.80 Frit 3134 19.9 19.90 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 6.0 6.00
Comments:
Nice shiny(but not too shiny)base for colorants
Recipe: (Percent, Batch)
F-4 spar 50.0 50.00 Dolomite 15.5 15.50 Magnesium carb 6.8 6.80 EPK 15.0 15.00 Flint 9.3 9.30 Frit 3124 3.5 3.50 ----- -------- Totals: 100.0 100.10
Also add:
Tin oxide 3.5 3.50
Comments:
From Katherine Grandey @ Univ of FL
Recipe: (Percent, Batch)
Ferro frit 3292 39.9 39.90 Ferro frit 3124 39.9 39.90 Kentucky OM #4 10.0 10.00 Silica (325m) 10.0 10.00 Magnesium carbonate 0.3 0.30 ----- -------- Totals: 100.0 100.10
Also add:
CMC 0.3 0.30 Epsom salts 0.5 0.50
Comments:
Mix to specific gravity of 1.5. I found another glaze that was developed a couple of years back by Dinah Collopy (dinah@GN2.GETNET.COM). Iain Iain Begg begg@mpr.ca Bearsden Studio, Vancouver, BC
Recipe: (Percent, Batch)
Potash feldspar 34.9 34.90 Pemco frit P-25 25.3 25.30 Silica 25.3 25.30 Whiting 5.8 5.80 Gerstley borate 5.1 5.10 Kentucky ball clay 3.6 3.60 ----- -------- Totals: 100.0 100.00
Comments:
transparency: transparent used frit 3269. Apply thin, I added 5% more flint---see text for colour options. Superpax 10%--really bright white--good colour response with stains except pinks. submitted by: Jo Ann Stevens e-mail: jstevens@niagara.com
Recipe: (Percent, Batch)
Kona F-4 feldspar 40.0 40.00 Gerstley borate 30.0 30.00 Ball clay 20.0 20.00 Silica 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
A fabulous clear glaze! I tested about 15 clears last year and only came up with 2 that I would consider using. This glaze is incredibly forgiving - doesn't show drips, overdips, differences in thickness, is glassy clear w/o yellow, and doesn't craze. I am absolutely thrilled with this glaze. It only has 4 ingredients, too. I use this over slips and underglazes and it's fine. I also use lusters over it with great results. What can I say? This is THE PERFECT clear glaze. Have fun. Laura in Oregon)
Recipe: (Percent, Batch)
Dolomite 4.7 4.70 Whiting 2.0 2.00 Silica 2.7 2.70 Kona F-4 feldspar 33.6 33.60 Frit 3195 57.0 56.90 ----- -------- Totals: 100.0 99.90
Also add:
Bentonite 2.0 2.00
Comments:
Boy, do I have a fabulous clear glaze for you!! I tested about 15 clears last year and only came up with 2 that I would consider using. This glaze is incredibly forgiving - doesn't show drips, overdips, differences in thickness, is glassy clear w/o yellow, and doesn't craze. Can you believe it? I couldn't either, but it's true and I am absolutely thrilled with this glaze. It only has 4 ingredients, too. I use this over slips and underglazes and it's fine. I also use lusters over it with great results. What can I say? This is THE PERFECT clear glaze. Have fun. Laura in Oregon)
Recipe: (Percent, Batch)
Gerstley borate 50.0 50.00 Flint 32.5 32.50 EPK 17.5 17.50 ----- -------- Totals: 100.0 100.00
Comments:
Recipe: (Percent, Batch)
Custer feldspar 39.0 39.00 Gerstley borate 20.0 20.00 Zinc oxide 3.0 3.00 Barium carbonate 6.0 6.00 Whiting 2.0 2.00 EPK 8.0 8.00 Silica 22.0 22.00 ----- -------- Totals: 100.0 100.00
Comments:
Parker Gloss and Gronborg Clear are very similar. I include both because the coefficient of expansion is just different enough for you to tell which way to go if they do not fit your body. And, yes, I know they all have barium in them. Not much, though, so you could probably substitute 3/4 as much strontium carb, and not affect them much, or possibly just leave it out. I hope this helps. Paul Lewing http://digitalfire.com/magic/lewing.htm pjlewing@aol.com
Recipe: (Percent, Batch)
Nepheline syenite 39.0 39.00 Gerstley borate 27.0 27.00 Silica 18.0 18.00 Whiting 8.0 8.00 EPK 8.0 8.00 ----- -------- Totals: 100.0 100.00
Comments:
Slips (use GTB over these)(Coppen Light is a ball clay from HC Spinks) UBL-33 Black Coppen Light 50 Frit 3134 20 Mason 6600 30 UBL-18 Blue Black Coppen Light 50 Neph Sy 10 Mason 6616 30 Wollastonite 10 UBL-17 Seal Brown Coppen Light 40 Neph Sy 20 Mason 6152 30 Wollastonite 10 UB-20 Cobalt Blue Coppen Light 60 Flint 20 Mason 6316 20 UPR-13 Pansy Purple Coppen Light 40 Neph Sy 10 Mason 6385 37.5 Wollastonite 12.5 UB-18 Teal Blue Coppen Light 60 Frit 3134 30 Mason 6305 10 UG-35 French Green Coppen Light 50 Frit 3134 15 Wollastonite 10 Mason 6219 25 UG-13 Coppen Green Coppen Light 40 Neph Sy 30 Copper Carb 15 Flint 10 Wollastonite 5 UG-18 Deep Turquoise Coppen Light 40 Neph Sy 10 Mason 6390 40 Wollastonite 10 UR-21 Crimson Coppen Light 40 Frit 3134 20 Mason 6006 30 Wollastonite 10 UPR-27 Lavender Coppen Light 50 Frit 3134 30 Mason 6319 20 UY-28 TYitanium Yellow Coppen Light 50 Neph Sy 10 Frit 3134 10 Mason 6485 30 UY-24 Yellow Coppen Light 50 Neph Sy 12.5 Mason 6481 25 Wollastonite 12.5 UP-45 Hot Pink Coppen Light 50 Frit 3134 30 Mason 6020 20 UP-33 Coral Coppen Light 50 Frit 3134 30 Neph Sy 5 Mason 6090 35 UGR-9 Gray Coppen Light 40 Neph Sy 5 Wollastonite 10 Frit 3134 5 Mason 6530 40 UW-1 White Coppen Light 30 Neph Sy 20 Frit 3134 10 Wollastonite 10 Mason 6700 30 submitted by: Jonathan Kaplan e-mail: 74034.3566@COMPUSERVE.COM source for original recipe: Wayne Bates
Recipe: (Percent, Batch)
Nepheline syenite 24.0 24.00 Wollastonite 6.4 6.40 Gerstley borate 16.8 16.80 EPK 8.0 8.00 Strontium carbonate 12.0 12.00 Flint 32.8 32.80 ----- -------- Totals: 100.0 100.00
Comments:
add CMC for brushing application. From Katherine Grandy
Recipe: (Percent, Batch)
Nepheline syenite 24.0 24.00 Wollastonite 6.4 6.40 Gerstley borate 16.8 16.80 EPK 8.0 8.00 Flint 32.8 32.80 Strontium carbonate 12.0 12.00 ----- -------- Totals: 100.0 100.00
Comments:
From Kathy King. Gem-like clear.
Recipe: (Percent, Batch)
Custer feldspar 15.5 15.50 Wollastonite 2.6 2.60 Dolomite 0.0 0.04 Strontium carbonate 12.0 12.00 Kaolin - theoretical 5.2 5.20 Silica 17.0 17.00 Frit 3124 47.7 47.70 ----- -------- Totals: 100.0 100.04
Comments:
From Kathy King. Gem-like clear.
Recipe: (Percent, Batch)
Custer feldspar 15.5 15.50 Wollastonite 2.6 2.60 Dolomite 0.0 0.04 Strontium carbonate 12.0 12.00 Kaolin - theoretical 5.2 5.20 Silica 17.0 17.00 Frit 3124 47.7 47.70 ----- -------- Totals: 100.0 100.04
Comments:
From Kathy King. Gem-like clear.
Recipe: (Percent, Batch)
Potash feldspar - theoretical 18.8 18.80 Wollastonite 12.9 12.90 Strontium carbonate 11.4 11.40 Kaolin - theoretical 0.9 0.90 Silica 29.8 29.80 Frit 3195 26.2 26.20 ----- -------- Totals: 100.0 100.00
Comments:
From Kathy King. Gem-like clear. Crazing on Highwater P5. Re-formulation to work on crazing. Less KNaO, more SiO2.
Recipe: (Percent, Batch)
Potash feldspar - theoretical 4.4 4.40 Wollastonite 4.7 4.70 Strontium carbonate 11.4 11.40 Kaolin - theoretical 8.7 8.70 Silica 25.6 25.60 Frit 3124 45.2 45.20 ----- -------- Totals: 100.0 100.00
Comments:
From Kathy King. Gem-like clear. Crazing on Highwater P5. Re-formulation to work on crazing. Less KNaO, more SiO2.
Recipe: (Percent, Batch)
Potash feldspar - theoretical 11.1 11.10 Whiting 10.6 10.60 Kaolin - theoretical 9.0 9.00 Silica 27.2 27.20 Frit 3124 10.1 10.10 Frit F-38 Fusion 32.0 32.00 ----- -------- Totals: 100.0 100.00
Comments:
From Kathy King. Gem-like clear. Crazing on Highwater P5. Re-formulation to work on crazing. Less KNaO, more SiO2.
Recipe: (Percent, Batch)
Potash feldspar - theoretical 6.7 6.70 Wollastonite 6.5 6.50 Strontium carbonate 11.2 11.20 Kaolin - theoretical 18.6 18.60 Silica 30.3 30.30 Frit 3134 26.6 26.60 ----- -------- Totals: 100.0 99.90
Comments:
From Kathy King. Gem-like clear. Crazing on Highwater P5. Re-formulation to work on crazing. Less KNaO, more SiO2.
Recipe: (Percent, Batch)
Custer feldspar 6.7 6.70 Wollastonite 6.5 6.50 Frit F-38 Fusion 11.0 11.00 EPK 18.7 18.60 Silica 30.4 30.30 Frit 3134 26.7 26.60 ----- -------- Totals: 100.0 99.70
Comments:
Revised to eliminate crazing on Highwater Clays p-5 body by Steve Howell. Variations -- + 5% Drakenfeld 41545 Yellow Stain + 1/2 % 6006 Deep Crimson = very yellow =1.5% 41545 Yellow + 1/2 6006 = pale yellow .15% Wedgewood blue stain - transparent blue-gray
Recipe: (Percent, Batch)
Nepheline syenite 26.0 26.00 Wollastonite 7.0 7.00 Gerstley borate 18.0 18.00 EPK 9.0 9.00 Flint 27.0 27.00 Strontium carbonate 13.0 13.00 ----- -------- Totals: 100.0 100.00
Comments:
Recipe: (Percent, Batch)
Kona F-4 feldspar 30.0 30.00 Gerstley borate 24.0 24.00 Wollastonite 15.0 15.00 EPK 8.0 8.00 Silica 23.0 23.00 ----- -------- Totals: 100.0 100.00
Comments:
From Sandy Potash Variations -- Striated green = + talc 3 + rutile 5 + strontium carb 10 + copper ox. 0.5 + zircopax 7 Periwinkle Terazzo (solid thick, speckled thin) + tin 7.1 + zinc 3.3 + cobalt xo 2.6 + dark rutile 3.1 Brown Aventurine (brown mauve thick, gold-speckled thin) + zinc 3.3 + dk rutile 2 + mang diox. 5.1
Recipe: (Percent, Batch)
Gerstley borate 44.6 44.64 EPK 26.8 26.79 Silica 28.6 28.57 ----- -------- Totals: 100.0 100.00
Comments:
here is a simple cone 6 oxidation glaze I have used often. I haven't tried it with colorants though. It is from Les Lawrence in Ceramics Monthly. submitted by: Suzanne Fuqua e-mail: Suzanne511@aol.com
Recipe: (Percent, Batch)
Custer feldspar 43.0 43.00 Gerstley borate 20.0 20.00 Whiting 2.0 2.00 Zinc oxide 3.0 3.00 Barium carbonate 6.0 6.00 EPK 2.0 2.00 Silica 24.0 24.00 ----- -------- Totals: 100.0 100.00
Comments:
Parker Gloss and Gronborg Clear are very similar. I include both because the coefficient of expansion is just different enough for you to tell which way to go if they do not fit your body. And, yes, I know they all have barium in them. Not much, though, so you could probably substitute 3/4 as much strontium carb, and not affect them much, or possibly just leave it out. I hope this helps. Paul Lewing http://digitalfire.com/magic/lewing.htm pjlewing@aol.com
Recipe: (Percent, Batch)
Gerstley borate 21.0 21.00 Whiting 8.0 8.00 Nepheline syenite 30.0 30.00 Kaolin 10.0 10.00 Flint 31.0 31.00 ----- -------- Totals: 100.0 100.00
Comments:
Does anyone have a good crystal clear cone 5 glaze recipe they could share? I like Patti's Crystal Clear ^5-7 from Clayart a few years ago. Janice Lipuma Lexington KY jan lipuma
Recipe: (Percent, Batch)
Gerstley borate 21.0 21.00 Nepheline syenite 30.0 30.00 Whiting 8.0 8.00 Kaolin 10.0 10.00 Flint 31.0 31.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 4.0 4.00
Comments:
Kathy Whipple likes this clear. Rate for cone 5-7
Recipe: (Percent, Batch)
Ferro frit 3134 50.0 50.00 Kaolin 30.0 30.00 Silica 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
I have had success with a clear developed by Plainsman Clays, Lethbridge Alberta, Canada. Find it has a broad range, but can turn a bit cloudy if it is too thick. This glaze does not craze! submitted by: Carolyn DiPasquale e-mail: sdipo@axionet.com source for original recipe: Plainsman Clays
Recipe: (Percent, Batch)
Pemco frit P-626 20.6 20.60 Nepheline syenite 23.9 23.90 Wollastonite 13.9 13.90 Whiting 4.6 4.60 EPK 6.8 6.80 Silica 30.3 30.30 ----- -------- Totals: 100.0 100.10
Also add:
Bentonite 1.9 1.90
Comments:
Candice Roeder - (for me it was shiny clear) originally SG-42 from Chappell book (I used 325 mesh flint, and amorphous silica - which stopped crazing) This was used on a stoneware (Standard 182G) and primarily on porcelain 135 from A.R.T.... Fired to cone 6 (standard cone)....same schedule of firing each time. Candice in 0 degree rural Michigan croeder1@aol.com
Recipe: (Percent, Batch)
Gerstley borate 44.7 44.70 EPK 26.8 26.80 Silica 28.5 28.50 ----- -------- Totals: 100.0 100.00
Comments:
It has worked on a variety of clays for me and I have used it over underglazes. It is a cone 6 oxidation glaze. submitted by: Cindy P Russell e-mail: crussel@tenet.edu
Recipe: (Percent, Batch)
Nepheline syenite 45.0 45.00 Colemanite 25.0 25.00 Kaolin 15.0 15.00 Silica 15.0 15.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 3.0 3.00
Comments:
The clear was lovely over the white slip but pinholed majorly over the blue. The blue had been poured on over my cream clay body plainsman M-340. Well if anyone can let me know why the pinholing on the blue that would be great (I suspect it must be a cobalt annoyance or something because the clear glaze was o.k on the white slip and on the regular clay itself). Also if anyone has another recipe to try that would be helpful. submitted by: Cheryl Brown e-mail: cbrown@terranet.ab.ca
Recipe: (Percent, Batch)
Cornwall Stone 47.4 47.40 Gerstley borate 47.4 47.40 Ball clay 5.3 5.30 ----- -------- Totals: 100.0 100.10
Also add:
Zircopax 5.3 5.30
Comments:
Val, please name this series. Glaze Type: Ca Na B. Opacity: Transparent. Firing type: Ox or Red .
Recipe: (Percent, Batch)
Colemanite 31.0 31.00 Dolomite 14.0 14.00 Kaolin 19.0 19.00 Silica 36.0 36.00 ----- -------- Totals: 100.0 100.00
Comments:
a very nice shiny, mottled cream color that has given me some interesting effects over dark slips. Gerstley Borate used for Colemanite. source of original recipe: Ceramics Monthly, March '94 p.60 submitted by: Sumi Dick e-mail: Sumi@AOL.COM
Recipe: (Percent, Batch)
Potash feldspar 59.8 59.81 Frit 3110 11.3 11.34 Zinc oxide 5.1 5.15 Talc 4.1 4.12 Whiting 16.5 16.49 EPK 3.1 3.09 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 1.0 1.03 Tin oxide 2.1 2.06
Comments:
In use RLC. Note: 1/2 cup Epsom Salts / 10000gm. eliminates settling. Frit 3195 may be substituted for 3110. Good reduction yields blood red. Oxidation is celadon-like green. Apply medium / thin won't be red / thick it crawls. If overlapped on another glaze - may crawl. Here is a formula that has recently been used here at Richland College, Dallas, Tx. I can't give you much information about the firing itself, since it was done by one of the other instructors. What I can tell you is that the colors seemed to go from Fire-engine red to red with blackish areas. Did not seem to run a lot. Possible Health Hazards: Talc: wear a NIOSH approved dust mask when handling dry material Unity Formula for Copper Red: 0.171 K2O??0.290 Al2O3?2.183 SiO2? 0.141 Na2O?0.010 B2O3??7.5:1 Si:Al Ratio 0.448 CaO? 0.082 MgO? 0.158 ZnO? Percentage Analysis: 57.63 % SiO2 13.01 % Al2O3 0.31 % B2O3 7.08 % K2O 3.82 % Na2O 11.03 % CaO 1.45 % MgO 5.67 % ZnO Hope this can be of some assistance......Fred Sweet
Recipe: (Percent, Batch)
Talc theoretical 7.9 7.86 Frit 3124 5.8 5.77 Nepheline syenite 86.4 86.37 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00 Copper carbonate 0.2 0.20
Comments:
BIG crackle when thick. John Britt in Ceramics Mo. Nov. 2011. NOt recommended for functional ware. Glaze both sides of ware, as uneven pressure may cause dunting. Bone ash may cause flocculation and the raw glaze will crack off. Deflocculate if needed. Apply thick. Additions of color > 1% will stop crackle formation.
Recipe: (Percent, Batch)
Magnesium carbonate 3.9 3.94 Frit 3124 7.4 7.41 Nepheline syenite 82.7 82.74 Kentucky OM #4 5.9 5.91 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00
Comments:
BIG crackle when thick. John Britt in Ceramics Mo. Nov. 2011. NOt recommended for functional ware. Glaze both sides of ware, as uneven pressure may cause dunting. Bone ash may cause flocculation and the raw glaze will crack off. Deflocculate if needed. Apply thick. Additions of color > 1% will stop crackle formation. Variations -- blue= +0.066 Cobalt carb turq= + copper carb 0.2 White= + superpax 0.5 yellow= + DeGussa stain 239416 rust= + rio 0.5
Recipe: (Percent, Batch)
Magnesium carbonate 4.3 4.26 Nepheline syenite 89.4 89.36 Kentucky OM #4 6.4 6.38 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00
Comments:
BIG crackle when thick. John Britt in Ceramics Mo. Nov. 2011. NOt recommended for functional ware. Glaze both sides of ware, as uneven pressure may cause dunting. Bone ash may cause flocculation and the raw glaze will crack off. Deflocculate if needed. Apply thick. Additions of color > 1% will stop crackle formation.
Recipe: (Percent, Batch)
Talc theoretical 25.0 25.00 Cryolite 15.0 15.00 Silica 30.0 30.00 EPK 30.0 30.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00
Comments:
Does not crater in oxidation, why? submitted by: Eliz Drachman e-mail: PhysandClay@EWORLD.COM
Recipe: (Percent, Batch)
Cornwall Stone 25.8 25.80 Gerstley borate 1.6 1.60 Lithium carbonate 4.8 4.80 Dolomite 16.4 16.40 Fluorspar 31.7 31.70 EPK 1.6 1.60 Flint 18.2 18.20 ----- -------- Totals: 100.0 100.10
Comments:
Recipe: (Percent, Batch)
Magnesium carbonate 50.0 50.00 Nepheline syenite 50.0 50.00 ----- -------- Totals: 100.0 100.00
Comments:
There was an article in ceramics Monthly, Feb 1990 on lichen glazes. I tried the Ball Crawl glaze. worked fairly well, but could be chipped off the pot too easily. this made me try putting it over another glaze. submitted by: Kathy Darby e-mail: kdarby@TMN.COM source for original recipe: Ceramics Monthly
Recipe: (Percent, Batch)
Bone ash 74.4 74.40 Cryolite 13.2 13.20 Barium carbonate 4.1 4.10 F-4 spar 8.3 8.30 ----- -------- Totals: 100.0 100.00
Comments:
Virginia Scotchie Variations -- try each: CuCO3 4% rutile 8 % CoCO3 3 CrO 2%
Recipe: (Percent, Batch)
Magnesium carbonate 50.0 50.00 Nepheline syenite 50.0 50.00 ----- -------- Totals: 100.0 100.00
Comments:
There was also an article in ceramics Monthly, Feb 1990 on lichen glazes. I tried the Ball Crawl glaze. worked fairly well, but could be chipped off the pot too easily. this made me try putting it over another glaze. submitted by: Kathy Darby e-mail: kdarby@TMN.COM source for original recipe: Ceramics Monthly
Recipe: (Percent, Batch)
Nepheline syenite 70.0 70.00 Magnesium carbonate 30.0 30.00 ----- -------- Totals: 100.0 100.00
Comments:
From Jamie Walker Variations -- 10-15% rutile for beige
Recipe: (Percent, Batch)
Kona F-4 feldspar 27.0 27.00 Magnesium carbonate 28.0 28.00 Frit 3134 9.0 9.00 Frit 3195 5.0 5.00 Talc theoretical 7.0 7.00 Zinc oxide 5.0 5.00 EPK 19.0 19.00 ----- -------- Totals: 100.0 100.00
Comments:
Recipe: (Percent, Batch)
Magnesium carbonate 25.0 25.00 Nepheline syenite 70.0 70.00 Kentucky OM #4 5.0 5.00 ----- -------- Totals: 100.0 100.00
Comments:
Sensitive to thickness. Use alone or over contrasting glaze. Add colorants if desired. For a glossier glaze w softer pebble, replace 20% of the neph sy with frit. Richard Burkett.
Recipe: (Percent, Batch)
Gerstley borate 47.5 47.50 Kona F-4 feldspar 20.3 20.30 Whiting 13.5 13.50 Strontium carbonate 5.1 5.10 Flint 13.5 13.50 ----- -------- Totals: 100.0 99.90
Also add:
Tin oxide 17.6 17.60 Red iron oxide 4.1 4.10
Comments:
Diverse color. 100% reliable. Cone 6 oxidation yields beautiful results/normal firing cycle. good results cones 4-6 - Interactive effect with other glazes:beautiful with cobalt glazes. It is from (of all places) a Reader's Digest craft book. It is a nice fat cream to beige glaze. Glossy but not garish. Breaks to reddish brown where thin. If your clay body has much iron in it, the reddish breaking is quite pronounced, with speckles. I use it on white stoneware up to cone 7, and sometimes on porcelain, (though on porcelain it is less earthy looking). It is a nice neutral earth tone. Stores well, coats well. Well behaved and forgiving. Dark slips used underneath will show through. I've fired it as low as 5 and as high as 7. submitted by: Candice Roeder e-mail: CRoeder1@aol.com source for original recipe: Readers Digest Craft Book
Recipe: (Percent, Batch)
Spodumene 10.7 10.70 Nepheline syenite 40.7 40.70 Whiting 9.6 9.60 Flint 23.3 23.30 Gerstley borate 7.6 7.60 Dolomite 4.8 4.80 Zinc oxide 3.4 3.40 ----- -------- Totals: 100.0 100.10
Also add:
Rutile 4.0 4.00 Red iron oxide 1.0 1.00 Bentonite 1.5 1.50 Zircopax 10.2 10.20
Comments:
Here is an interesting cone 6 that is very glossy, semi transparent in the light tan range. Some fine particle speckling too. Dan Saultman, Colorado clay-art@concentric.net http://www.concentric.net/~clay-art/Index.shtml
Recipe: (Percent, Batch)
Feldspar 36.1 37.90 Whiting 9.0 9.50 Dolomite 22.1 23.20 Flint 28.1 29.50 EPK 4.8 5.00 ----- -------- Totals: 100.0 105.10
Also add:
Bentonite 1.9 2.00
Comments:
Variations -- + 10% rutile in oxidation = glassy white w/pink crystals. In reduction = blue w/white and pink crystals
Recipe: (Percent, Batch)
Dolomite 50.0 50.00 Gerstley borate 12.5 12.50 Custer feldspar 37.5 37.50 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt carbonate 14.3 14.30 Copper carbonate 14.3 14.30
Comments:
Mishy Michelle Lowe, potter in the Phoenix desert mishlowe@indirect.com mishlowe@aztec.asu.edu http://www.amug.org/~mishlowe/index.html
Recipe: (Percent, Batch)
Feldspar 51.0 51.10 EPK 15.6 15.60 Flint 15.6 15.60 Whiting 17.8 17.80 ----- -------- Totals: 100.0 100.10
Also add:
Red iron oxide 4.4 4.40 Manganese dioxide 6.7 6.70
Comments:
From Hamer, A Potters Dictionary of Materials and Techniques 3rd ed.p210-11 NOT for food,
Recipe: (Percent, Batch)
Cullet (container glass) 49.0 49.01 Redart clay 6.2 6.24 EPK 9.5 9.47 Dolomite 2.7 2.68 Whiting 21.2 21.19 Silica 11.4 11.42 ----- -------- Totals: 100.0 100.01
Comments:
Total 100.01 Molecular Formula: 0.279 KNa0 0.122 Al2O3 1.985 SiO2 0.590 CaO 0.007 Fe2O3 0.003 TiO2 0.128 MgO This recipe is simlar in terms of unity to one in use in Thailand. I have no idea about its durability. Perhaps some one else can speak to this. Certainly there is a lot of variation in container glass. Louis louis katz
Recipe: (Percent, Batch)
Gerstley borate 7.0 7.00 Nepheline syenite 19.0 19.00 Dolomite 5.0 5.00 EPK 12.0 12.00 Wollastonite 34.0 34.00 Flint 23.0 23.00 ----- -------- Totals: 100.0 100.00
Comments:
Recipe: (Percent, Batch)
Gerstley borate 5.0 5.00 Nepheline syenite 17.8 18.00 EPK 13.9 14.00 Dolomite 12.9 13.00 Wollastonite 22.8 23.00 Flint 27.7 28.00 ----- -------- Totals: 100.0 101.00
Comments:
Higher silica
Recipe: (Percent, Batch)
Custer feldspar 63.0 63.00 Whiting 18.0 18.00 Zinc oxide 5.0 5.00 Talc 5.0 5.00 EPK 9.0 9.00 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 12.0 12.00
Comments:
See also D.K. 11 Revised Variations -- May use 8 - 12% Zircopax for white.
Recipe: (Percent, Batch)
Custer feldspar 62.0 62.00 Whiting 14.0 14.00 Zinc oxide 6.0 6.00 Talc 8.0 8.00 EPK 10.0 10.00 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 8.0 8.00
Comments:
Revised by V.C. Whiter & more toward satin than D.K. 11.
Recipe: (Percent, Batch)
Gerstley borate 17.0 17.00 Nepheline syenite 29.0 29.00 Barnard clay 54.0 54.00 ----- -------- Totals: 100.0 100.00
Comments:
> ClayArt Listserv recipe < If you find this glaze useful, please consider submitting it to the GlazeBase project with full documentation. Use one of the GlazeBase submission formats available on the CeramicsWeb web page. Comments: Test fired on Plainsman M340 (an off white clay) in an electric kiln. This was dark brown, well behaved semi-gloss. It's semi-transparent where thin. From Kathy Darby From Vickie Sproule via clayart email: jsproule@mars.ark.com
Recipe: (Percent, Batch)
Gerstley borate 18.0 17.96 Nepheline syenite 22.3 22.26 Barnard clay 35.7 35.73 Flint 23.9 23.85 Soda ash 0.2 0.20 ----- -------- Totals: 100.0 100.00
Comments:
Test fired on Plainsman M340 (an off white clay) in an electric kiln. I didn't have any soda ash, so I didn't add it. This was a dark brown glossy glaze very much like Alberta slip in cone 9, but darker. From Kathy Darby Thanks Kathy! From Vickie Sproule via clayart email: jsproule@mars.ark.com
Recipe: (Percent, Batch)
Flint 21.3 21.35 Potash feldspar 39.3 39.33 Whiting 16.8 16.85 Ball clay 11.2 11.24 Volcanic ash 11.2 11.24 ----- -------- Totals: 100.0 100.01
Also add:
Red iron oxide 12.4 12.36 Bentonite 2.2 2.25 Titanium dioxide 2.2 2.25
Comments:
I also have a dark brown gloss recipe for ^6 but have not yet tested it How nice to be able to share something from my books, I have been so pleased with some of the recipes that I have tested from other clayart subscribers. I only wish that I could give proper credit to the originators of these but I am afraid I was amiss in recording such info. Sue on a rainy day in British Columbia - how unusual sue hutchen
Recipe: (Percent, Batch)
Custer feldspar 24.9 24.88 Nepheline syenite 17.9 17.91 Colemanite 7.0 6.97 Whiting 14.9 14.93 Kaolin 22.4 22.39 Flint 12.9 12.94 ----- -------- Totals: 100.0 100.02
Also add:
Manganese dioxide 8.0 7.96 Black copper oxide 1.5 1.49
Comments:
from Plainsman Clay (Alberta) here's a brown that we have used for years in our studio: Apart from being dark, brown and matt, this glaze goes on well, covers well and looks good with many other glazes. Hope it's one you add to your recipe book. Geri Huntley Kamloops BC jhuntley@cariboo.bc.ca
Recipe: (Percent, Batch)
Potash feldspar 20.4 20.43 Barium carbonate 43.0 43.01 Lithium carbonate 5.4 5.38 Silica 10.8 10.75 Kaolin 20.4 20.43 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 7.5 7.53
Comments:
Semimatt dark blue breaking to turquoise. ok From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Whiting 9.5 9.50 Zinc oxide 5.5 5.50 Frit 3124 44.5 44.50 Custer feldspar 20.0 20.00 Bentonite 7.5 7.50 EPK 5.0 5.00 Silica 8.0 8.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 9.0 9.00 Red iron oxide 3.0 3.00
Comments:
From Central Carolina CC via Ceramics Mo.07 Buyer's Guide supplement.
Recipe: (Percent, Batch)
Potash feldspar 48.0 48.00 China clay 16.0 16.00 Dolomite 15.0 15.00 Whiting 10.0 10.00 Silica 5.0 5.00 PotteryCrafts Frit P2960 5.5 5.50 Zinc oxide 0.5 0.50 ----- -------- Totals: 100.0 100.00
Comments:
This gives a white satin finish 'eggshell' glaze. coloured slip applied to the leather hard pot come through the glaze very successfully. submitted by: David Hewitt e-mail: david@DHPOT.DEMON.CO.UK
Recipe: (Percent, Batch)
Whiting 16.0 16.00 Dolomite 0.9 0.90 Zinc oxide 5.3 5.30 Frit 3195 24.8 24.80 Potash feldspar - theoretical 32.8 32.80 Kaolin - theoretical 0.3 0.30 Silica 19.9 19.90 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 9.0 9.00 Red iron oxide 3.0 3.00
Comments:
From Central Carolina CC via Ceramics Mo.07 Buyer's Guide supplement. Recalculated to use less frit and be cheaper. Untested.
Recipe: (Percent, Batch)
Custer feldspar 53.0 4240.00 Whiting 22.0 1760.00 Barium carbonate 16.0 1280.00 EPK 9.0 720.00 ----- -------- Totals: 100.0 8000.00
Also add:
Yellow ochre 5.0 400.00 Rutile 2.0 160.00
Comments:
Soft matt. Yellowish, brownish, greenish."Multi-colored yellow-browns, etc. Beautiful." Glaze Type: Ca Ba AlMatt. Opacity: Opaque. Firing type: Reduction .
Recipe: (Percent, Batch)
Kaolin 16.7 16.70 Calcined kaolin 38.8 38.90 Talc theoretical 5.6 5.60 Nepheline syenite 16.7 16.70 Silica 16.7 16.70 Borax 5.6 5.60 ----- -------- Totals: 100.0 100.20
Also add:
Zircopax 11.1 11.10 Red iron oxide 16.7 16.70 Manganese dioxide 16.7 16.70 Chrome oxide 16.7 16.70
Comments:
Colorants can range from 10.5 to 21, but 15 is entered as an average. A few years ago I participated in a workshop with Randy Brodnax who work with lichen glazes, among other techniques. His recipes follow. We covered the bisqued pot with the black englobe, (brushed on) and then dipped the pot in the lichen glaze. Then colored commercial underglazes were sprayed on the glaze. Wonderful effects. The black engobe gives better contrast with the lichen glaze. I also tried the lichen glaze both over and under my regualr cone six glazes, some very interesting, very nice effects. try it. submitted by: Kathy Darby e-mail: kdarby@TMN.COM source for original recipe: Randy Brodnax
Recipe: (Percent, Batch)
Buckingham feldspar 47.1 34.78 Barium 23.5 17.39 Frit Pb 11.8 8.70 Frit 11.8 8.70 Zinc 5.9 4.35 ----- -------- Totals: 100.0 73.92
Comments:
White semi-opaque semi-mat smooth dull glaze. Colors tested: Iron 7%, Copper 4%, Rutile 7%, Nickle 4% and Nickle 4 plus Iron 7. More notes??? Glaze Type: Li Ba. Opacity: Semi-opaque. Firing type: Ox or Red .
Recipe: (Percent, Batch)
Potash spar 30.0 150.00 Zinc oxide 30.0 150.00 Flint 18.0 90.00 Whiting 8.0 40.00 barium carb 7.3 36.50 EPK 5.4 27.00 Dolomite 1.3 6.50 ----- -------- Totals: 100.0 500.00
Comments:
Good w/stains & oxides about 10%. Cobalt 1% = electric blue. 2 coats if brushed. Use gum if brushing. From George Bowes.
Recipe: (Percent, Batch)
Custer feldspar 32.0 32.00 Whiting 14.0 14.00 Talc 6.0 6.00 Ferro frit 3134 6.0 6.00 Kentucky OM #4 17.0 17.00 Silica 25.0 25.00 ----- -------- Totals: 100.0 100.00
Comments:
Can use either Custer or G-200 Feldspar. Ratio 9.84 Expansion 457.43 Here is a foodsafe glaze made up for me by Ron Roy. It is a balanced glaze and has passed the 24 hour in the freezer to boiling water test without any crazing or cracking. Translucent white. Transparent where thin, whiter where thicker. Lynn Barth Cherry Valley Pottery LABARTH@worldnet.att.net
Recipe: (Percent, Batch)
Custer feldspar 40.0 40.00 Gerstley borate 18.0 18.00 Whiting 16.0 16.00 Flint 16.0 16.00 EPK 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
From Kristen Kieffer. From George Bowes, Penland book. Variations -- Cadet #6302 2-5% Blackberry #6381 3-8% Turquoise #6364 2-6% Deep Salmon #6031 3-5% Black Nickel 1-2% Golden Ambrosia #6129 5% Amethyst 3-5% Peacock #6396 2-4% Saturn Orange #6121 3-5% Fawn #6104 5-8%
Recipe: (Percent, Batch)
Kona F-4 feldspar 45.4 45.00 Flint 20.2 20.00 Gerstley borate 13.4 13.30 Whiting 8.1 8.00 Dolomite 6.5 6.40 Zinc oxide 4.0 4.00 EPK 2.5 2.50 ----- -------- Totals: 100.0 99.20
Comments:
From Kristen Kieffer. From George Bowes, Penland book. Variations -- Cadet #6302 2-5% Blackberry #6381 3-8% Turquoise #6364 2-6% Deep Salmon #6031 3-5% Black Nickel 1-2% Golden Ambrosia #6129 5% Amethyst 3-5% Peacock #6396 2-4% Saturn Orange #6121 3-5% Fawn #6104 5-8%
Recipe: (Percent, Batch)
Custer feldspar 29.6 29.60 Nepheline syenite 8.6 8.60 Strontium carbonate 4.9 4.90 Zinc oxide 3.3 3.30 Gerstley borate 20.7 20.70 Whiting 1.8 1.80 Silica 31.1 31.10 ----- -------- Totals: 100.0 100.00
Comments:
The base glaze is shiny, almost clear, that is a little fluid at ^6+ A nice 'hint' of blue can be the effect of a small amount of Cobalt in a transparent glaze with a fair amount of Rutile. and Iron wash under it can also cause interesting variations. This gives a good white with 5% rutile, with opalescent tones and, with luck and a good clay to work on, some blues. Try adding a small amount of Cobalt. Note that there is no clay-- you may need to use a suspender, or add a little Bentonite. The Strontium I substituted for Barium is a little coarse and can settle. If you try it- please let me know the results. submitted by: Bill Aycock e-mail: baycock@AIRnet.net
Recipe: (Percent, Batch)
Potash feldspar - theoretical 17.6 17.60 Strontium carbonate 4.9 4.90 Whiting 0.2 0.20 Zinc oxide 3.3 3.30 Silica 28.8 28.80 Frit 3134 34.7 34.70 Kaolin - theoretical 10.6 10.60 ----- -------- Totals: 100.0 100.10
Comments:
The base glaze is shiny, almost clear, that is a little fluid at ^6+ A nice 'hint' of blue can be the effect of a small amount of Cobalt in a transparent glaze with a fair amount of Rutile. and Iron wash under it can also cause interesting variations. This gives a good white with 5% rutile, with opalescent tones and, with luck and a good clay to work on, some blues. Try adding a small amount of Cobalt. Note that there is no clay-- you may need to use a suspender, or add a little Bentonite. The Strontium I substituted for Barium is a little coarse and can settle. If you try it- please let me know the results. submitted by: Bill Aycock e-mail: baycock@AIRnet.net
Recipe: (Percent, Batch)
Kona F-4 feldspar 18.6 18.56 Dolomite 0.4 0.36 Gerstley borate 39.6 39.56 EPK 22.3 22.29 Silica 19.2 19.24 ----- -------- Totals: 100.0 100.01
Comments:
(optional zircopax) 8% --for a white glaze. This works well with many different colorants. Yellow is a sunny /bright that pools in the crevices with 6% titanium dioxide. I have also added up to 10% more EPK for a less runny glaze, but I fire closer to ^7 than to ^5. submitted by: Mary Kuilema e-mail: kuil@k2.iserv.net
Recipe: (Percent, Batch)
Gerstley borate 50.0 50.00 EPK 50.0 50.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Ca B Firing type: Ox or Red. From Val Cushing. VC ed
Recipe: (Percent, Batch)
F-4 spar 43.5 45.00 Flint 23.2 24.00 Gerstley borate 12.9 13.30 Whiting 8.0 8.30 Dolomite 6.2 6.40 Zinc oxide 3.9 4.00 EPK 2.4 2.50 ----- -------- Totals: 100.0 103.50
Comments:
Variations -- + 8% Mason #6129 Golden Ambrosia
Recipe: (Percent, Batch)
Custer feldspar 43.0 43.00 Gerstley borate 20.0 20.00 Whiting 2.0 2.00 Zinc oxide 3.0 3.00 Barium carbonate 6.0 6.00 EPK 2.0 2.00 Silica 24.0 24.00 ----- -------- Totals: 100.0 100.00
Comments:
Parker Gloss and Gronborg Clear are very similar. I include both because the coefficient of expansion is just different enough for you to tell which way to go if they do not fit your body. And, yes, I know they all have barium in them. Not much, though, so you could probably substitute 3/4 as much strontium carb, and not affect them much, or possibly just leave it out. I hope this helps. Paul Lewing http://digitalfire.com/magic/lewing.htm pjlewing@aol.com
Recipe: (Percent, Batch)
Custer feldspar 43.0 43.00 Gerstley borate 20.0 20.00 Whiting 2.0 2.00 Zinc oxide 3.0 3.00 Barium carbonate 6.0 6.00 EPK 2.0 2.00 Silica 24.0 24.00 ----- -------- Totals: 100.0 100.00
Comments:
Parker Gloss and Gronborg Clear are very similar. I include both because the coefficient of expansion is just different enough for you to tell which way to go if they do not fit your body. And, yes, I know they all have barium in them. Not much, though, so you could probably substitute 3/4 as much strontium carb, and not affect them much, or possibly just leave it out. I hope this helps. Paul Lewing http://digitalfire.com/magic/lewing.htm pjlewing@aol.com
Recipe: (Percent, Batch)
Albany Slip 47.4 47.37 Potash feldspar 28.4 28.42 Flint 9.5 9.47 Zinc oxide 9.5 9.47 Whiting 5.3 5.26 ----- -------- Totals: 100.0 99.99
Also add:
Rutile 5.3 5.26
Comments:
Rob Wadey (robert wadey ) 9734B - 100 Ave Grande Prairie, Alberta t8V 0T6 Phone: (403) 538-3731 Fax: (403) 538.3732
Recipe: (Percent, Batch)
Gerstley borate 50.0 50.00 Petalite 40.0 40.00 Flint 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
From a University of Georgia class handout on glaze & clay from Andy Nasisse.
Recipe: (Percent, Batch)
Gerstley borate 50.0 50.00 EPK Kaolin 17.5 17.50 Flint 32.5 32.50 ----- -------- Totals: 100.0 100.00
Comments:
I use this over slips and there has never been any crazing. Where it is a little thick it shows white. For a blue I added: Cobalt Carbonate .5 % Manganese Carbonate 5.0% For a beautiful blue-gray: Chrome Oxide 4% Tin Oxide 5% In response to request for cone 6 glazes...This glaze was in a former post from someone else, but I have been using it for years. Some results of my testing are below. I fire in electric and use a commercial brown/black clay. This glaze is simple and dependable from firing to firing. Phyllis Nelson Baker University NELSON@george.bakeru.edu
Recipe: (Percent, Batch)
Spodumene 12.6 12.60 Nepheline syenite 30.0 30.00 Whiting 11.4 11.40 Flint 27.5 27.50 Gerstley borate 8.9 8.90 Dolomite 5.7 5.70 Zinc oxide 4.0 4.00 ----- -------- Totals: 100.0 100.10
Also add:
Bentonite 1.5 1.50 Zircopax 10.2 10.20
Comments:
For Pat Chesney- I use a gloss white glaze that it supposed to mature at cone 4 -8. I fire it to 6-7, so I haven't personally tested it at 4. I got the recipe from Eastern Ill. Univ. Hope this helps. from rebecca mott
Recipe: (Percent, Batch)
Kona F-4 Spar 19.0 19.00 Custer feldspar 19.0 19.00 Nepheline syenite 19.0 19.00 Dolomite 25.0 25.00 Whiting 6.0 6.00 Kaolin 12.0 12.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 7.5 7.50
Comments:
A glossier version of Polished Matt. Glaze Type: Ca Mg AlMatt. Firing type: Ox or Red. From Val Cushing. VC ed
Recipe: (Percent, Batch)
Cornwall Stone 34.6 34.60 Whiting 8.4 8.40 Gillespie borate 2.9 2.90 Strontium carbonate 9.3 9.30 Kona F-4 feldspar 23.2 23.20 Frit 3110 10.6 10.60 Flint 9.3 9.30 Lithium carbonate 1.7 1.70 ----- -------- Totals: 100.0 100.00
Comments:
Recipe: (Percent, Batch)
Potash feldspar 55.6 55.56 Barium carbonate 41.4 41.41 Zinc oxide 3.0 3.03 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt carbonate 0.3 0.25 Chrome oxide 0.3 0.25
Comments:
Dry, pale blue with darker flecks From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 55.6 55.56 Barium carbonate 41.4 41.41 Zinc oxide 3.0 3.03 ----- -------- Totals: 100.0 100.00
Also add:
Titanium dioxide 4.0 4.04 Cobalt carbonate 0.5 0.51
Comments:
Dry, cornflower blue/green with yellow flecks, nice. From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 55.6 55.56 Barium carbonate 41.4 41.41 Zinc oxide 3.0 3.03 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt carbonate 1.0 1.01 Rutile 5.1 5.05 Copper carbonate 2.0 2.02
Comments:
Dry, mid grey/blue with yellow green flecks, good. From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Magnesium carbonate 4.5 4.50 Whiting 20.2 20.20 Wollastonite 5.6 5.60 Nepheline syenite 56.2 56.20 Redart 13.5 13.50 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 6.7 6.70 Zircopax 12.4 12.40
Comments:
Golden glaze to round out the palette and add warmth. This applied smoothly - was a smooth satin matt - color similar to old gold. They are dependable firing to firing in Cone 6 electric on dark clay. From Jeff Dietrich in Ceramics Montly, April 1991 & sent via ClayArt by Phyllis Nelson Baldwin City, Kansas E-mail: NELSON@george.bakeru.edu
Recipe: (Percent, Batch)
Red clay 86.6 86.70 Ball clay 6.7 6.70 Silica 6.7 6.70 ----- -------- Totals: 100.0 100.10
Also add:
Manganese dioxide 64.9 65.00 Copper oxide 6.7 6.70 Cobalt oxide 4.2 4.20
Comments:
Matt black where thin, crinkled gold where thick, ok. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Redart 85.7 60.00 Ball clay 7.1 5.00 Flint 7.1 5.00 ----- -------- Totals: 100.0 70.00
Also add:
Manganese dioxide 64.3 45.00 Copper oxide 7.1 5.00 Cobalt oxide 7.1 5.00
Comments:
From Craig Reynolds. Runs a lot at cone 10, but lovely waxy to matt surface. NOT for food. Calls for black copper oxide.
Recipe: (Percent, Batch)
Bentonite 10.0 5.81 Frit 3124 30.0 17.44 Whiting 15.0 8.72 Custer feldspar 45.0 26.16 ----- -------- Totals: 100.0 58.13
Also add:
Red iron oxide 35.0 20.35 Cobalt carbonate 12.0 6.98 Manganese dioxide 5.0 2.91 Copper oxide 20.0 11.63
Comments:
NEVER for food. Frong George Bowes.
Recipe: (Percent, Batch)
Potash feldspar 42.9 42.90 Flint 27.8 27.80 EPK 8.0 8.00 Whiting 13.9 13.90 Zinc oxide 7.4 7.40 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt oxide 2.8 2.80 Red iron oxide 4.0 4.00 Manganese dioxide 2.8 2.80
Comments:
(Manganese dioxide is toxic in dust form. Came from Alex Combs, Anchorage Community College, circa 1973. Ric Ric Swenson, Bennington College, Route 67-A, Bennington, Vermont, 05201-6001 USA. telephone 802 442 - 5401 vox X 262 fax X 237 direct fax line 802 442 - 6164 email rswenson@bennington.edu ------------------------------
Recipe: (Percent, Batch)
Colemanite 21.3 21.30 Custer feldspar 14.5 14.50 Ferro frit 3134 14.9 14.90 Spodumene 11.0 11.00 EPK 17.0 17.00 Silica 21.3 21.30 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 5.1 5.10
Comments:
I am cheap, so I use Zircopax instead of Tin. This gives a milky, translucent white. Slip decoration underneath shows well. source for original recipe: Ceramics Monthly, March '94 p.60 submitted by: Sumi Dick e-mail: Sumi@AOL.COM
Recipe: (Percent, Batch)
Nepheline syenite 46.7 46.74 Silica 25.0 25.00 Gerstley borate 10.9 10.87 Ball clay 6.5 6.52 Dolomite 10.9 10.87 ----- -------- Totals: 100.0 100.00
Also add:
Titanium dioxide 7.6 7.61 Bentonite 1.1 1.09 Copper carbonate 1.6 1.63
Comments:
It is between a lime and chartreuse. submitted by: Beth Fusaro e-mail: elfusaro@freenet.scri.fsu.edu
Recipe: (Percent, Batch)
Nepheline syenite 46.7 46.70 Silica 25.0 25.00 Gerstley borate 10.9 10.90 Ball clay 6.5 6.50 Dolomite 10.9 10.90 ----- -------- Totals: 100.0 100.00
Also add:
Titanium dioxide 7.6 7.60 Bentonite 1.1 1.10 Copper carbonate 1.6 1.60
Comments:
It is between a lime and chartreuse. submitted by: Beth Fusaro e-mail: elfusaro@freenet.scri.fsu.edu
Recipe: (Percent, Batch)
Nepheline syenite 74.3 74.26 Zinc oxide 2.0 1.98 Dolomite 5.0 4.95 Whiting 3.0 2.97 EPK 6.9 6.93 Flint (325m) 8.9 8.91 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 4.0 3.96 Cobalt oxide 3.0 2.97 Rutile 9.9 9.90
Comments:
one Type: Orton Clay Color/Type: Brown stoneware Clarity: Opaque Crystals: None Clustered, Dispersed Bubbles Within Glaze: No Glaze Flow: Little flow Glaze Type: What Makes This Glaze Unique: It is an extremely intriguing glaze because of the variety of color and surface quality that it yields depending on the clay color, thickness of the glaze and whether or not it overlaps another glaze. Firing data: only tested at cone 6 and 7 - Surface quality variations: Applied thickly, the color is almost a gun metal black with a waxy to satin matt finish over buff, brown and porcelain clays. Lighter coats, especially over buff clays yield greens and blues and almost a glossy surface. - Kiln size, manufacture and type: Skutt 1027 - Effects of firing to different cones: - Coloring oxides, stains and opacifiers tested: - Known glaze flaws: - Apparent viscosity for pouring and dipping: - Application thickness: Depends on the desired effect. It can be dipped, but brushing yields more interesting effects and greater color variety. - Effects on different clay bodies: See above - Interactive effect with other glazes: One of the most exciting effects develops when using this over a white glaze covering porcelain clay. An extremely light coat brushed on yields bright sea blues and greens with patches of almost gold. Over the same white glaze on buff clay, the cobalt blue dominates. (The white glaze I use tends to turn virtually clear over buff or brown clay, leaving a glossy, faintly white blue finish.) - Specific gravity of glaze for pouring and dipping: - Water pH/composition: - Calculated unity formula: - Analyses for any rare or unusual ingredients used in this glaze: Original recipe called for Atomite brand whiting Glaze Contributor: Madeleine Hall-Arber Test Site: Newton, Massachusetts Source for the Original Recipe: Xeroxed typewritten pages without an notation of author, found at the student pottery center at Brandeis University.
Recipe: (Percent, Batch)
Custer feldspar 47.0 47.00 Whiting 7.5 7.50 Barium carbonate 10.5 10.50 Zinc oxide 6.0 6.00 Kentucky OM #4 5.0 5.00 EPK 5.0 5.00 Flint 19.0 19.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 4.0 4.00
Comments:
But this ain't no Kermit green. Very stony matte with very hard surface. I suspect it was a tile glaze. Joe Zeller supplied the base, I went ape with the copper. I'm not taking responsibility for anyone using these glazes, etc. Something is probably toxic. They are examples of my research and they work out in formulation. Which is what they are examples of. So go formulate your own non-toxic glazes, if that is possible. It's probably bad for the environment too. Email me with questions as to household performance, as that may be indicative of other problems. The badly crazed surfaces are not considered to be a continous-non porous sanitary surfaces. Eric Hansen, Lawrence, Kansas wabi_sabi@mailexcite.com
Recipe: (Percent, Batch)
Whiting 18.0 18.00 Zinc oxide 8.0 8.00 Cornwall Stone 22.0 22.00 Soda spar 44.0 44.00 EPK 3.0 3.00 Bentonite 5.0 5.00 ----- -------- Totals: 100.0 100.00
Also add:
Titanium dioxide 4.0 4.00 Copper carbonate 4.0 4.00
Comments:
Good with Ash Fresca over Green Dragon.
Recipe: (Percent, Batch)
Gerstley borate 48.0 48.00 EPK 18.6 18.60 Silica 31.4 31.40 Soda ash 2.0 2.00 ----- -------- Totals: 100.0 100.00
Also add:
Chrome oxide 2.0 2.00 Cobalt oxide 1.0 1.00
Comments:
submitted by: Cindy Russell e-mail: crussel@tenetedu
Recipe: (Percent, Batch)
Dolomite 19.0 19.00 Whiting 3.0 3.00 Nepheline syenite 35.0 35.00 Ball clay 24.0 24.00 Silica 19.0 19.00 ----- -------- Totals: 100.0 100.00
Also add:
Chrome oxide 2.0 2.00 Cobalt carbonate 1.0 1.00
Comments:
submitted by: Cindy Russell e-mail: crussel@tenetedu
Recipe: (Percent, Batch)
Custer feldspar 60.0 60.00 Calcium carbonate 8.0 8.00 Zinc oxide 16.0 16.00 Flint 16.0 16.00 ----- -------- Totals: 100.0 100.00
Also add:
Macaloid 1.0 1.00 Nickel carbonate 2.0 2.00 Rutile 4.0 4.00
Comments:
Clay Times NOv/Dec.05 p.52. OK for food. Use light rutile.
Recipe: (Percent, Batch)
Gerstley borate 48.9 49.00 EPK 19.0 19.00 Flint 31.9 32.00 Soda ash 0.2 0.20 ----- -------- Totals: 100.0 100.20
Also add:
Chromium oxide 2.0 2.00 Cobalt carbonate 1.0 1.00
Comments:
Recipe: (Percent, Batch)
Silica 8.0 8.00 Nepheline syenite 46.0 46.00 Spodumene 10.0 10.00 Kaolin 12.0 12.00 Dolomite 10.0 10.00 Gerstley borate 10.0 10.00 Zinc oxide 4.0 4.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 2.5 2.50
Comments:
cone 6? Electric Kiln Ceramics (latest volume). Marilyn at the Warwick Pottery Studio u1004425@warwick.net
Recipe: (Percent, Batch)
Nepheline syenite 31.1 31.10 Silica 31.1 31.10 Strontium carbonate 13.9 13.90 Gerstley borate 10.4 10.40 Ball clay 6.2 6.20 Whiting 4.2 4.20 Zinc oxide 0.5 0.50 Lithium carbonate 2.6 2.60 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 3.1 3.10 Rutile 5.2 5.20 Zirconium silicate 9.3 9.30
Comments:
omments: Shiny palmer green, darker where thick. ok. From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg)
Recipe: (Percent, Batch)
Volcanic ash 34.9 34.91 Gerstley borate 7.5 7.55 Nepheline syenite 18.9 18.87 Whiting 16.0 16.04 Kaolin 17.0 16.98 Flint 5.7 5.66 ----- -------- Totals: 100.0 100.01
Also add:
Copper oxide 3.8 3.77
Comments:
(Richmond Potters' Club standard, unknown origin) (a very dark green matt - usually boring on it's own but excellent for over-dipping or otherwise slurping around. Also a good base glaze - the copper can be replaced with judicious amounts of other colourants, and they all make pleasant matt glazes.) Here are a couple of standards from the Richmond Potters Club, and a few of my own formulation that have worked well in ^6 oxidation. They aren't revolutionary (my exciting ones have things like barium in them, or are less predictable for a classroom situation) but they have been reliable, and allow for some play. They all calculate out to well within the INSIGHT limit formulas for maturity at ^6. If anyone tests these and comes up with problems, new ideas, good variations etc. could they let me know? I'll look forward to a larger list being posted to clayart. Veronica Shelford e-mail: shelford@island.net s-mail: P.O. Box 6-15 Thetis Island, BC V0R 2Y0 Tel: (250) 246-1509
Recipe: (Percent, Batch)
Nepheline syenite 40.0 40.00 Wollastonite 25.0 25.00 Spodumene 12.0 12.00 EPK 12.0 12.00 Silica 11.0 11.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 4.0 4.00 Bentonite 2.0 2.00
Comments:
The other day a matt turquoise glaze was posted on Clayart. I am suggesting that midfire potters not use this Maryland glaze for food containers. It doesn't have enough silica to keep the copper properly bound when faced with food acids. Adapting the same Seger formula, this recipe is more balanced. Only tests will show if these yield an acceptable colour and surface on your claybody. submitted by: Tom Buck e-mail: Tom.Buck@freenet.hamilton.on.ca or http://digitalfire.com/magic/tombuck.htm
Recipe: (Percent, Batch)
Lithium carbonate 50.0 39.02 Frit 3124 37.5 29.27 Flint 12.5 9.76 ----- -------- Totals: 100.0 78.05
Also add:
Superpax 25.0 19.51 Copper carbonate 2.6 2.00
Comments:
Recipe: (Percent, Batch)
Soda feldspar 42.5 42.50 Spodumene 17.5 17.50 Pioneer kaolin 7.5 7.50 Dolomite 17.5 17.50 Gerstley borate 15.0 15.00 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 25.0 25.00 Copper carbonate 3.1 3.12 Bentonite 1.3 1.25
Comments:
It's cone 6, from Coopers Electric Kiln Ceramics, Vol.2, p122. Called 'Mexico Point Green'. It's a lovely soft matte green on the white burning stoneware I use. submitted by: Dan Taylor e-mail: dataylor@mlc.awinc.com
Recipe: (Percent, Batch)
Dolomite 13.1 13.10 Lithium carbonate 3.3 3.30 Whiting 3.9 3.90 Frit 3134 27.5 27.50 EPK 22.2 22.20 Flint 30.0 30.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 2.5 2.50 Red iron oxide 2.0 2.00
Comments:
Has matt crystals suspended in glassy fields. Good w/colorants. From Rick Malmgren in CM. Variations -- white: no colorants Blue: 1.5 cobalt carb
Recipe: (Percent, Batch)
Nepheline syenite 58.0 58.00 Strontium carbonate 26.0 26.00 Ball clay 10.0 10.00 Silica 5.0 5.00 Lithium carbonate 1.0 1.00 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 4.0 4.00 Copper carbonate 4.0 4.00 Bentonite 4.0 4.00 Epsom salts 1.0 1.00
Comments:
kiln type: gas green pools black with some purplish highlights submitted by: John Anthony e-mail: JTRAX@AOL.COM
Recipe: (Percent, Batch)
F-4 feldspar 19.1 19.08 Potash feldspar 22.8 22.76 Kentucky OM #4 10.9 10.91 Silica 17.5 17.45 Strontium carbonate 13.6 13.63 Whiting 9.5 9.54 Dolomite 6.6 6.62 ----- -------- Totals: 100.0 99.99
Also add:
Tin oxide 4.0 4.00 Copper carbonate 6.0 6.00
Comments:
I got this copy of Randys Green at a workshop, where it was described as a C 10 glaze. It works very well as is at C 5-6 and is a deep forest green, slightly translucent. Occasionally I have underfired it to C4, where it becomes matte and slightly metallic and looks very nice. I hope this helps. Leslie lesaint1@aol.com
Recipe: (Percent, Batch)
Feldspar 30.0 30.00 Whiting 10.0 10.00 Gerstley borate 12.0 12.00 Strontium carbonate 8.0 8.00 Magnesium carbonate 3.0 3.00 EPK 5.0 5.00 Silica 32.0 32.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 3.0 3.00 Copper carbonate 5.0 5.00 Rutile 5.0 5.00 Bentonite 2.0 2.00
Comments:
A really nice satin finish soft yellowish green that fit my clay body very well. It has a pretty low coefficient of expansion, and looks good, though not as yellowish, without the rutile. I know this doesn't add up to 100, but that's the way it was posted. Here it is. Good Luck, Paul Lewing, Seattle pjlewing@aol.com http://digitalfire.com/magic/lewing.htm
Recipe: (Percent, Batch)
Potash feldspar 30.0 30.01 Whiting 10.0 9.99 Colemanite 12.0 12.00 Barium carbonate 8.0 8.00 Magnesium carbonate 3.0 3.00 EPK 5.0 5.00 Silica 32.0 32.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 3.0 3.00 Copper carbonate 5.0 5.00 Rutile 5.0 5.00 Bentonite 2.1 2.06
Comments:
A few people asked me for the *original* Sana's Green recipe, so here it is. Richard Gralnik
Recipe: (Percent, Batch)
Potash feldspar 30.9 30.90 Whiting 10.3 10.30 Colemanite 12.4 12.40 Strontium carbonate 5.3 5.30 Magnesium carbonate 3.1 3.10 EPK 5.1 5.10 Silica 32.9 32.90 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 3.1 3.10 Copper carbonate 5.1 5.10 Rutile 5.1 5.10 Bentonite 2.1 2.10
Comments:
glaze archive queen Michelle Lowe, potter in the Phoenix desert mishlowe@indirect.com mishlowe@aztec.asu.edu http://www.amug.org/~mishlowe
Recipe: (Percent, Batch)
Nepheline syenite 67.0 67.00 Dolomite 10.0 10.00 EPK 8.0 8.00 Silica 9.0 9.00 Zinc oxide 6.0 6.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 3.0 3.00
Comments:
Exquisite light green gloss but no pink flecks Tested on Dillo White clay at a full ^6. submitted by: Lori Wilkinson e-mail: lorwilk@lookingglass.net
Recipe: (Percent, Batch)
Custer feldspar 42.5 42.50 Whiting 6.6 6.60 Strontium carbonate 29.3 29.30 Ball clay 12.3 12.30 Zinc oxide 9.4 9.40 ----- -------- Totals: 100.0 100.10
Comments:
From Sally Brogden. Re-calc of Jeff Oestreich's cone 10 Sombright Green for cone 6.
Recipe: (Percent, Batch)
Custer feldspar 50.2 50.24 Silica 25.1 25.12 Whiting 9.1 9.05 Dolomite 5.0 5.03 Gerstley borate 7.5 7.54 Zinc oxide 3.0 3.02 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 7.0 7.04
Comments:
originally suggested 7-10% copper carbonate. a deep green translucent that I like over white glazes, for a mottled, opaque effect. Also nice layered with cobalt blue glazes. I have found that many cone 10 glazes will at least do something interesting at cone 6. Try it! source of original recipe: I adapted this off the base for Tom Coleman's cone 10 red. purple. submitted by: Sumi Dick e-mail: Sumi@AOL.COM
Recipe: (Percent, Batch)
F-4 feldspar 19.1 19.08 Potash feldspar 22.8 22.76 Kentucky OM #4 10.9 10.91 Silica 17.5 17.45 Strontium carbonate 13.6 13.63 Whiting 9.5 9.54 Dolomite 6.6 6.62 ----- -------- Totals: 100.0 99.99
Also add:
Tin oxide 4.0 4.00 Copper carbonate 6.0 6.00
Comments:
I got this copy of Randys Green at a workshop, where it was described as a C 10 glaze. It works very well as is at C 5-6 and is a deep forest green, slightly translucent. Occasionally I have underfired it to C4, where it becomes matte and slightly metallic and looks very nice. I hope this helps. Leslie lesaint1@aol.com
Recipe: (Percent, Batch)
Frit 3134 4.3 4.30 Nepheline syenite 29.3 29.30 Spodumene 27.2 27.20 Strontium carbonate 17.8 17.80 Grolleg 12.0 12.00 Silica 8.0 8.00 Lithium carbonate 1.4 1.40 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 5.0 5.00 Titanium dioxide 5.0 5.00
Comments:
Variation on Pete Pinnell's Weathered Bronze. Black crystals, breaks black over edges and texture. A bit more matte. See Clay Times Mar/Apr. 2004 for article p.19. Variations -- 3% copper + 5 % Ti = more green 5% copper + 5% Ti = more black
Recipe: (Percent, Batch)
G-200 feldspar 47.9 47.90 Whiting 7.2 7.20 Barium carbonate 9.0 9.00 Zinc oxide 7.2 7.20 Talc 2.4 2.40 Ball clay 4.8 4.80 Silica 21.6 21.60 ----- -------- Totals: 100.0 100.10
Comments:
From a University of Georgia class handout on glaze & clay from Andy Nasisse.
Recipe: (Percent, Batch)
Nepheline syenite 39.0 39.00 Gerstley borate 27.0 27.00 Silica 18.0 18.00 Whiting 8.0 8.00 EPK 8.0 8.00 ----- -------- Totals: 100.0 100.00
Comments:
Slips (use GTB over these)(Coppen Light is a ball clay from HC Spinks) UBL-33 Black Coppen Light 50 Frit 3134 20 Mason 6600 30 UBL-18 Blue Black Coppen Light 50 Neph Sy 10 Mason 6616 30 Wollastonite 10 UBL-17 Seal Brown Coppen Light 40 Neph Sy 20 Mason 6152 30 Wollastonite 10 UB-20 Cobalt Blue Coppen Light 60 Flint 20 Mason 6316 20 UPR-13 Pansy Purple Coppen Light 40 Neph Sy 10 Mason 6385 37.5 Wollastonite 12.5 UB-18 Teal Blue Coppen Light 60 Frit 3134 30 Mason 6305 10 UG-35 French Green Coppen Light 50 Frit 3134 15 Wollastonite 10 Mason 6219 25 UG-13 Coppen Green Coppen Light 40 Neph Sy 30 Copper Carb 15 Flint 10 Wollastonite 5 UG-18 Deep Turquoise Coppen Light 40 Neph Sy 10 Mason 6390 40 Wollastonite 10 UR-21 Crimson Coppen Light 40 Frit 3134 20 Mason 6006 30 Wollastonite 10 UPR-27 Lavender Coppen Light 50 Frit 3134 30 Mason 6319 20 UY-28 TYitanium Yellow Coppen Light 50 Neph Sy 10 Frit 3134 10 Mason 6485 30 UY-24 Yellow Coppen Light 50 Neph Sy 12.5 Mason 6481 25 Wollastonite 12.5 UP-45 Hot Pink Coppen Light 50 Frit 3134 30 Mason 6020 20 UP-33 Coral Coppen Light 50 Frit 3134 30 Neph Sy 5 Mason 6090 35 UGR-9 Gray Coppen Light 40 Neph Sy 5 Wollastonite 10 Frit 3134 5 Mason 6530 40 UW-1 White Coppen Light 30 Neph Sy 20 Frit 3134 10 Wollastonite 10 Mason 6700 30 submitted by: Jonathan Kaplan e-mail: 74034.3566@COMPUSERVE.COM source for original recipe: Wayne Bates
Recipe: (Percent, Batch)
Frit P-25 27.0 27.00 Gerstley borate 15.0 15.00 Spodumene 40.0 40.00 EPK 18.0 18.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 6.8 6.80 Copper carbonate 4.8 4.80
Comments:
Recipe: (Percent, Batch)
Cornwall Stone 50.0 50.00 Ball clay 12.0 12.00 Dolomite 20.0 20.00 Bone ash 10.0 10.00 Lithium carbonate 8.0 8.00 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 4.0 4.00 Zircopax 4.0 4.00
Comments:
From Shannon Nelson at Univ. of FL, also Sandy Lance.
Recipe: (Percent, Batch)
Custer feldspar 11.8 11.80 Ball clay 29.4 29.40 Silica 29.4 29.40 Whiting 29.4 29.40 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 17.6 17.60
Comments:
From Julia Galloway in Clay Times May/Jn 2004.
Recipe: (Percent, Batch)
Custer feldspar 30.0 30.00 Silica (325m) 20.0 20.00 Whiting (Hubercarb) 15.0 15.00 EPK 10.0 10.00 Gerstley borate 25.0 25.00 ----- -------- Totals: 100.0 100.00
Also add:
Superpax (Tam) 10.0 10.00
Comments:
^6 in sitter- average bend; on buff stoneware; no soaking; nice glaze but not too white, seemed more of a tan esp. where thin. not the rich fat white that would imitate majolica. my overglazes seemed to run and or bleed together alittle, can definitely see movement in them. glaze fits fine. these results were consistent on all 4 tiles. my overglazes were -by volume sea green stain 1 gerstley borate 1 deep crimson stain 1 gerstley borate 1 ball clay 1 Saturn orange stain 3 gerst. borate 3 ball clay 1 the overglazes tend to seperate more when the base glaze is thicker on both test and at 04 at 04 they are excellent submitted by: Ed Brownlee e-mail: edware@umich.edu
Recipe: (Percent, Batch)
Nepheline syenite 36.4 36.36 Dolomite 18.2 18.18 Silica 18.2 18.18 Kaolin 18.2 18.18 Bone ash 5.5 5.45 Zinc oxide 3.6 3.64 ----- -------- Totals: 100.0 99.99
Also add:
Copper carbonate 1.8 1.82
Comments:
Very pale green/tan, darker where pooled, very nice. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Barium carbonate 36.7 36.73 Nepheline syenite 59.2 59.19 Ball clay 4.1 4.08 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 10.2 10.20 Cobalt oxide 0.5 0.51
Comments:
Dry glaze, pale blue with vivid blue speckles. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 34.7 34.69 Silica 41.8 41.84 Whiting 17.4 17.35 Ball clay 6.1 6.12 ----- -------- Totals: 100.0 100.00
Also add:
Praseodymium oxide 10.2 10.20 Zircon 5.1 5.10
Comments:
Dry, brilliant pale yellow, good as a dry glaze. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 34.7 34.69 Silica 41.8 41.84 Whiting 17.4 17.35 Ball clay 6.1 6.12 ----- -------- Totals: 100.0 100.00
Also add:
Praseodymium oxide 10.2 10.20 Zircon 5.1 5.10
Comments:
Dry, brilliant pale yellow, good as a dry glaze. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 36.0 35.99 Barium carbonate 22.6 22.62 Silica 14.4 14.40 Gerstley borate 10.3 10.28 Zirconium silicate 9.2 9.25 Kaolin 5.1 5.14 Lithium carbonate 2.1 2.06 Zinc oxide 0.3 0.26 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt oxide 1.5 1.54 Rutile 0.5 0.51
Comments:
Very nice semi matt mid to cornflower blue, speckles, paler blue where thinner, very good. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Barium carbonate 36.7 36.73 Nepheline syenite 59.2 59.19 Ball clay 4.1 4.08 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt oxide 0.5 0.51
Comments:
Dry, adhered, pale blue with vivid mid blue speckles. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Barium carbonate 36.7 36.73 Nepheline syenite 59.2 59.19 Ball clay 4.1 4.08 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 2.0 2.04
Comments:
Dry, adhered, pale off white to pale turquoise where thicker. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Barium carbonate 36.7 36.73 Nepheline syenite 59.2 59.19 Ball clay 4.1 4.08 ----- -------- Totals: 100.0 100.00
Also add:
Titanium dioxide 3.6 3.57 Cobalt carbonate 0.5 0.51
Comments:
No notes on this one. rd From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Barium carbonate 36.7 36.73 Nepheline syenite 59.2 59.19 Ball clay 4.1 4.08 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 3.1 3.06 Rutile 3.1 3.06
Comments:
Dry glaze, grey, green tint, darker where thicker. Orange yellow where thin. Moderate aplication. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Barium carbonate 38.0 38.00 Nepheline syenite 58.0 58.00 Ball clay 4.0 4.00 ----- -------- Totals: 100.0 100.00
Also add:
Titanium dioxide 3.5 3.50 Cobalt oxide 1.5 1.50
Comments:
Dry glaze, mid blue to dark blue where thick. Pale yellow where thin. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 45.0 45.00 Whiting 10.0 10.00 Zinc oxide 10.0 10.00 Kaolin 10.0 10.00 Silica 25.0 25.00 ----- -------- Totals: 100.0 100.00
Comments:
Nice cream white, no craze, very nice. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 27.4 27.40 Gerstley borate 9.1 9.13 Barium carbonate 16.4 16.44 Ball clay 5.5 5.48 Whiting 3.6 3.65 Lithium carbonate 1.8 1.83 Silica 27.4 27.40 Zinc oxide 0.5 0.46 Zirconium silicate 8.2 8.22 ----- -------- Totals: 100.0 100.01
Comments:
From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore Variations -- Color: with 0.25 Cobalt Carbonate = streaky cornflower blue, with 0.5 Cobalt Carbonate = strong streaky blue
Recipe: (Percent, Batch)
Nepheline syenite 38.5 38.46 Gerstley borate 9.6 9.62 Whiting 3.8 3.85 Lithium carbonate 1.9 1.92 Barium carbonate 17.3 17.31 Silica 28.8 28.85 ----- -------- Totals: 100.0 100.01
Also add:
Copper carbonate 1.9 1.92 Tin oxide 7.7 7.69 Zirconium silicate 11.5 11.54
Comments:
kiln type: electric nice From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 25.5 25.45 Zinc oxide 13.6 13.64 Gerstley borate 11.8 11.82 Kaolin 7.3 7.27 Silica 32.7 32.73 Magnesium carbonate 9.1 9.09 ----- -------- Totals: 100.0 100.00
Comments:
Semi matt white, no craze, good. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 38.5 38.46 Magnesium carbonate 4.4 4.40 Zinc oxide 14.3 14.29 Kaolin 3.3 3.30 Silica 39.6 39.56 ----- -------- Totals: 100.0 100.01
Comments:
Very white, shiny, no craze, excellent. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 49.0 49.00 Lithium carbonate 3.0 3.00 Zinc oxide 11.0 11.00 Whiting 5.0 5.00 Kaolin 16.0 16.00 Silica 16.0 16.00 ----- -------- Totals: 100.0 100.00
Comments:
Shiny white, no craze, good. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 26.3 26.32 Barium carbonate 41.0 41.05 Zinc oxide 15.8 15.79 Lithium carbonate 2.1 2.11 Silica 14.7 14.74 ----- -------- Totals: 100.0 100.01
Also add:
Nickel Oxide 4.2 4.21
Comments:
Semi matt, pale coffee brown with blue patches. good. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 27.4 27.37 Barium carbonate 25.3 25.26 Zinc oxide 28.4 28.42 Lithium carbonate 2.1 2.11 Silica 16.8 16.84 ----- -------- Totals: 100.0 100.00
Also add:
Nickel Oxide 4.2 4.21
Comments:
Shiny, nice dark blue with paler blue speckles, rust on edges, very nice. Uses nickel oxide? or carbonate? From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 21.9 21.88 Zinc oxide 21.9 21.88 Barium carbonate 31.2 31.25 Lithium carbonate 4.2 4.17 Kaolin 3.1 3.12 Silica 17.7 17.71 ----- -------- Totals: 100.0 100.01
Also add:
Nickel Oxide 4.2 4.17
Comments:
Semi matt, beige/blue with dark red/brown areas. Lighter blue speckles. Very nice, apply thickly for blue. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 34.7 34.69 Whiting 17.4 17.35 Ball clay 6.1 6.12 Silica 41.8 41.84 ----- -------- Totals: 100.0 100.00
Comments:
Shiny, clear white (on white clay) no craze, very good. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 38.2 38.18 Zinc oxide 10.9 10.91 Kaolin 13.5 13.45 Silica 24.1 24.09 Whiting 13.4 13.36 ----- -------- Totals: 100.0 99.99
Comments:
Very nice, clear shiny glaze, no craze, very good. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Dolomite 19.0 19.00 Whiting 3.0 3.00 Nepheline syenite 35.0 35.00 Ball clay 24.0 24.00 Silica 19.0 19.00 ----- -------- Totals: 100.0 100.00
Also add:
Chromium oxide 2.0 2.00 Cobalt carbonate 1.0 1.00
Comments:
Semi matt, dark green/blue with chocolate speckles, chocolate on edges, nice. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 33.2 33.15 Wollastonite 22.1 22.10 Gerstley borate 19.9 19.89 Ball clay 11.1 11.05 Barium carbonate 11.1 11.05 Lithium carbonate 2.8 2.76 ----- -------- Totals: 100.0 100.00
Also add:
Zirconium silicate 9.9 9.94 Cobalt oxide 1.1 1.10
Comments:
Kiln Type: kiln type: electric Color: pale blue with darker flecks, darker blue where pooled or thicker. From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 56.2 56.18 Red clay 13.5 13.48 Wollastonite 5.6 5.62 Whiting 20.2 20.23 Magnesium carbonate 4.5 4.49 ----- -------- Totals: 100.0 100.00
Also add:
Zirconium silicate 12.4 12.36 Red iron oxide 6.7 6.74
Comments:
Kiln Type: electric Color: nice coffee, pale brown with cream speckles. very good From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 46.4 46.43 Whiting 21.4 21.43 Gerstley borate 8.9 8.93 Lithium carbonate 17.9 17.86 Barium carbonate 5.4 5.36 ----- -------- Totals: 100.0 100.01
Also add:
Silica 78.5 78.55 Tin oxide 7.1 7.14 Rutile 5.4 5.36
Comments:
Kiln Type: electric From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 40.0 40.00 Zinc oxide 4.0 4.00 Dolomite 3.0 3.00 Whiting 15.0 15.00 Kaolin 5.0 5.00 Silica 33.0 33.00 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 4.0 4.00 Chrome Oxide 0.5 0.50
Comments:
Kiln Type: electric good From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 46.7 46.67 Whiting 20.0 20.00 Zinc oxide 11.1 11.11 Dolomite 5.6 5.56 Kaolin 11.1 11.11 Silica 5.6 5.56 ----- -------- Totals: 100.0 100.01
Also add:
Tin oxide 4.4 4.44
Comments:
Kiln Type: electric nice. nice surface From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 32.3 32.26 Ball clay 21.5 21.51 Wollastonite 19.3 19.35 Gerstley borate 10.7 10.75 Barium carbonate 10.7 10.75 Zinc oxide 3.2 3.23 Lithium carbonate 2.1 2.15 ----- -------- Totals: 100.0 100.00
Also add:
Zirconium silicate 7.5 7.53 Copper carbonate 2.1 2.15
Comments:
Kiln Type: electric Color: pale blue with darker flecks, turquoise where thick From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Soda feldspar 39.0 39.00 Kaolin 5.0 5.00 Zinc oxide 18.0 18.00 Barium carbonate 28.0 28.00 Silica 10.0 10.00 ----- -------- Totals: 100.0 100.00
Also add:
Nickel oxide 1.5 1.50
Comments:
kiln type: electric good From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 38.2 38.18 Kaolin 13.6 13.64 Whiting 13.6 13.64 Zinc oxide 10.9 10.91 Silica 23.6 23.64 ----- -------- Totals: 100.0 100.01
Also add:
Tin oxide 9.1 9.09 Chrome oxide 0.4 0.45
Comments:
kiln type: electric nice base glaze From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 33.3 33.33 Wollastonite 22.2 22.22 Ball clay 22.2 22.22 Gerstley borate 10.0 10.00 Barium carbonate 8.9 8.89 Zinc oxide 0.6 0.56 Lithium carbonate 2.8 2.78 ----- -------- Totals: 100.0 100.00
Also add:
Zirconium silicate 11.1 11.11 Copper carbonate 2.2 2.22
Comments:
Kiln Type: electric Color: very pale off white-tan, orange specks where thin, pale green where thick, flashing on the edges. From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Whiting 17.0 17.00 Nepheline syenite 34.0 34.00 Kaolin 8.0 8.00 Silica 41.0 41.00 ----- -------- Totals: 100.0 100.00
Also add:
Iron oxide 13.0 13.00
Comments:
Shiny black/brown, ok. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 55.6 55.57 Whiting 24.4 24.44 Zinc oxide 4.4 4.44 Kaolin 11.1 11.11 Silica 4.4 4.44 ----- -------- Totals: 100.0 100.00
Also add:
Iron Oxide 3.3 3.33 Rutile 3.3 3.33
Comments:
Semi matt pale yellow, green yellow where thicker, tiny brown flecks, ok. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 60.0 60.00 Barium carbonate 24.0 24.00 Lithium carbonate 5.0 5.00 Kaolin 6.0 6.00 Silica 5.0 5.00 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt carbonate 0.3 0.25 Tin oxide 8.0 8.00
Comments:
Semi matt, very nice buttery surface. Duck egg blue with darker specks From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 33.9 33.90 Dolomite 17.0 16.95 Bone ash 5.1 5.08 Zinc oxide 3.4 3.39 Kaolin 8.5 8.47 Silica 19.5 19.49 Whiting 4.2 4.24 Zirconium silicate 8.5 8.47 ----- -------- Totals: 100.0 99.99
Comments:
A nice, stable, semi matt white. A typical dolomite response to gosu- grey with yellow speckles in places, good From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 67.0 67.00 Dolomite 10.0 10.00 Kaolin 8.0 8.00 Silica 9.0 9.00 Zinc oxide 6.0 6.00 ----- -------- Totals: 100.0 100.00
Also add:
Iron Oxide 2.0 2.00 Copper carbonate 1.5 1.50
Comments:
omments: very pale, warm green with pink flecks. From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 67.0 67.00 Dolomite 10.0 10.00 Kaolin 8.0 8.00 Silica 9.0 9.00 Zinc oxide 6.0 6.00 ----- -------- Totals: 100.0 100.00
Also add:
Iron Oxide 2.0 2.00 Chrome Oxide 1.0 1.00
Comments:
omments: shiny, mid tan. From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 67.0 67.00 Dolomite 10.0 10.00 Kaolin 8.0 8.00 Silica 9.0 9.00 Zinc oxide 6.0 6.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 1.5 1.50 Cobalt oxide 0.3 0.25
Comments:
Mid blue with Pink flecks. I began to notice some similar glazes, so, I will list the main glaze recipe and the variations in the comments section. From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 38.7 38.72 Whiting 29.0 29.04 Barium carbonate 13.6 13.55 Kaolin 11.6 11.62 Ball clay 4.8 4.84 Zinc oxide 0.3 0.29 Lithium carbonate 1.9 1.94 ----- -------- Totals: 100.0 100.00
Also add:
Zirconium silicate 8.7 8.71
Comments:
The base appears to be a semi matt. From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. variations: IE3 A/4 - Copper Carbonate 3.0 -pale turquoise with green-brown flecks IE3 A/6 - Cobalt Oxide 0.5 - Blue White IE3 A/7 - Manganese Dioxide 2.0 - Pink Mauve IE3 A/C - Copper Carbonate 1.5 - Nice blue-green, pale w/ tan-yellow flck IE3 A/H - Iron Oxide 2.0, copper carbonate 1.5 - pale green w/ orange-brown flecks IE3 A/M - Rutile 2.0, Chrome Oxide 1.0 - mauve with deeper mauve flecks IE3 A/O - Copper Carbonate 1.5, Cobalt Oxide 0.25 - green blue breaking to pale blue IE3 A/R - Copper Carbonate 1.5, Manganese Dioxide 1 - tan green with brown flecks IE3 A/U - Cobalt Oxide 0.25, Manganese Dioxide 1 - pale grey blue with blue and pink flecks. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Barium carbonate 37.5 37.50 Nepheline syenite 58.3 58.33 Ball clay 4.2 4.17 ----- -------- Totals: 100.0 100.00
Also add:
Blythe Red Glaze Stain 10.4 10.42
Comments:
omments: Dry pink, ok. From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 29.7 29.70 Silica 29.7 29.70 Barium carbonate 17.8 17.82 Gerstley borate 9.9 9.90 Ball clay 5.9 5.94 Whiting 4.0 3.96 Zinc oxide 0.5 0.50 Lithium carbonate 2.5 2.48 ----- -------- Totals: 100.0 100.00
Also add:
Praseodymium oxide 9.9 9.90 Zirconium silicate 8.9 8.91
Comments:
omments: shiny, pale yellow. good. From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 26.0 26.00 Barium carbonate 41.7 41.70 Lithium carbonate 3.1 3.10 Zinc oxide 12.5 12.50 Silica 16.7 16.70 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 4.2 4.20
Comments:
Color: tan/brown with blue flecks, some bright pink flecks. From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv.
Recipe: (Percent, Batch)
Potash feldspar 40.0 40.00 Zinc oxide 4.0 4.00 Dolomite 3.0 3.00 Whiting 15.0 15.00 Kaolin 5.0 5.00 Silica 33.0 33.00 ----- -------- Totals: 100.0 100.00
Also add:
Chrome Oxide 0.5 0.50 Iron Oxide 4.0 4.00
Comments:
Shiny brown, quite nice. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 40.0 40.00 Zinc oxide 4.0 4.00 Dolomite 3.0 3.00 Whiting 15.0 15.00 China clay 5.0 5.00 Silica 33.0 33.00 ----- -------- Totals: 100.0 100.00
Also add:
chrome oxide 0.5 0.50 Red iron oxide 4.0 4.00
Comments:
In oxidation at cone 6 a deep red iron oxide red. In reduction at cone 6 a deep brown with a slight green tint at close inspection. source for the original recipe: Emmanuel Coopers Glaze books submitted by: J.D. e-mail: CLAYJUNKIE@AOL.COM
Recipe: (Percent, Batch)
Gerstley borate 54.9 54.88 Talc 14.6 14.63 Flint 30.5 30.49 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 22.0 21.95
Comments:
Here is an Ox Blood Red that I've used in the past. Apply it HEAVILY for the best results. Cone 6 Oxidation. andrew s lubow
Recipe: (Percent, Batch)
Nepheline syenite 56.8 56.80 Whiting 11.8 11.80 Zinc oxide 10.9 10.90 EPK 18.9 18.90 Silica 1.6 1.60 ----- -------- Totals: 100.0 100.00
Also add:
Vanadium pentoxide 5.8 5.80
Comments:
Clay Times Sept/Oct 08. By John Chalke. Use w/and chrome colors will be brown due to zinc.
Recipe: (Percent, Batch)
Barium carbonate 20.0 20.00 Gerstley borate 10.0 10.00 Talc 10.0 10.00 Whiting 10.0 10.00 Custer feldspar 40.0 40.00 Flint 10.0 10.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 5.0 5.00
Comments:
CM May 2000 p.102
Recipe: (Percent, Batch)
Potash feldspar 41.0 41.00 Strontium carbonate 20.0 20.00 EPK 10.0 10.00 Flint 10.0 10.00 Gerstley borate 10.0 10.00 Zinc oxide 9.0 9.00 ----- -------- Totals: 100.0 100.00
Comments:
Variations -- 5% copper 1% cobalt 3% mn
Recipe: (Percent, Batch)
Potash spar 40.4 40.60 Strontium carbonate 19.9 20.00 Kaolin 10.0 10.10 Flint 9.9 10.00 Gerstley borate 9.9 10.00 Zinc oxide 9.8 9.90 ----- -------- Totals: 100.0 100.60
Also add:
Copper carbonate 5.0 5.00
Comments:
Thin = brown/green. Thicker beautiful green. Also try stains. Not great for purples, bad for pinks. From George Bowes.
Recipe: (Percent, Batch)
Kona F-4 feldspar 40.4 40.40 Strontium carbonate 19.9 19.90 EPK 10.0 10.00 Silica 9.9 9.90 Gerstley borate 9.9 9.90 Zinc oxide 9.8 9.80 ----- -------- Totals: 100.0 99.90
Comments:
Soft opaque satin matte. Good with other colorants. Tested with Laguna Borate subst for GB, and looks very similar. Variations -- vanadium ms 10
Recipe: (Percent, Batch)
Ferro frit 3110 30.0 30.00 Soda feldspar 35.0 35.00 Whiting 10.0 10.00 Kaolin 10.0 10.00 Silica 10.0 10.00 Zinc oxide 5.0 5.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 10.0 10.00 Iron oxide 4.0 4.00
Comments:
nice, shiny orange brown, light tan where thick. very nice From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 47.1 47.06 Dolomite 17.6 17.65 Kaolin 11.8 11.76 Silica 23.5 23.53 ----- -------- Totals: 100.0 100.00
Also add:
Manganese dioxide 3.5 3.53 Cobalt carbonate 4.7 4.71 Chrome Oxide 1.2 1.18 Iron Oxide 1.2 1.18
Comments:
semi matt, shiny black. good From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 35.7 35.71 Whiting 12.2 12.24 Zinc oxide 24.5 24.49 Silica 22.5 22.45 Kaolin 5.1 5.10 ----- -------- Totals: 100.0 99.99
Also add:
Cobalt carbonate 1.5 1.53
Comments:
shiny, pleasant blue, darker where thicker. good From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 35.7 35.71 Whiting 12.2 12.24 Zinc oxide 24.5 24.49 Silica 22.5 22.45 Kaolin 5.1 5.10 ----- -------- Totals: 100.0 99.99
Also add:
Cobalt carbonate 1.5 1.53 Nickel (ox or carb?) 1.5 1.53
Comments:
omments: dark blue-green, glossy. darker blue where thicker. good From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Flint 25.3 25.30 Strontium carbonate 4.9 4.90 Gerstley borate 21.1 21.10 Whiting 1.5 1.50 Custer spar 45.0 45.00 EPK 2.1 2.10 ----- -------- Totals: 100.0 99.90
Comments:
Recipe: (Percent, Batch)
Nepheline syenite 40.0 40.00 Dolomite 20.0 20.00 Flint 20.0 20.00 Kaolin 10.0 10.00 Bone ash 6.0 6.00 Zinc oxide 4.0 4.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 2.0 2.00
Comments:
Candice croeder1@aol.com
Recipe: (Percent, Batch)
K-200 feldspar 46.0 46.00 Soda ash 5.0 5.00 Gerstley borate 12.0 12.00 Whiting 10.0 10.00 Barium carbonate 5.0 5.00 Lithium carbonate 2.0 2.00 Flint 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00 Titanium dioxide 4.0 4.00 Copper carbonate 5.0 5.00
Comments:
Cone 6 variation of high-fire glaze from Val Cushing.
Recipe: (Percent, Batch)
Soda ash 11.2 10.76 Lithium carbonate 2.1 2.00 Wollastonite 11.0 10.58 Barium carbonate 5.2 5.00 Silica 41.0 39.42 Frit 3134 21.0 20.25 Alumina 8.5 8.22 ----- -------- Totals: 100.0 96.22
Also add:
Bentonite 2.1 2.00 Titanium dioxide 4.2 4.00 Copper carbonate 5.2 5.00
Comments:
Cone 6 variation of high-fire glaze from Val Cushing.
Recipe: (Percent, Batch)
Potash feldspar 45.0 45.00 Whiting 10.0 10.00 Zinc oxide 10.0 10.00 Kaolin 10.0 10.00 Silica 25.0 25.00 ----- -------- Totals: 100.0 100.00
Comments:
A nice cream. No crazing. Very nice Brian Kemp. Singapore kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 38.2 38.18 Zinc oxide 10.9 10.91 Kaolin 13.6 13.64 Silica 23.6 23.64 Whiting 13.6 13.64 ----- -------- Totals: 100.0 100.01
Also add:
Chrome Oxide 0.9 0.91 Rutile 0.9 0.91
Comments:
Shiny Tan/orange. Nice Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Barium carbonate 50.0 50.00 Spodumene 40.0 40.00 Gerstley borate 10.0 10.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 3.0 3.00 Copper carbonate 3.0 3.00
Comments:
Semi matt. Turquoise green. Paler on edges Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 37.7 37.74 Dolomite 18.9 18.87 Bone ash 5.7 5.66 Zinc oxide 3.8 3.77 Kaolin 12.3 12.26 Silica 21.7 21.70 ----- -------- Totals: 100.0 100.00
Comments:
Semi matt white. Buttery surface Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 38.2 38.18 Zinc oxide 10.9 10.91 Kaolin 13.6 13.64 Silica 23.6 23.64 Whiting 13.6 13.64 ----- -------- Totals: 100.0 100.01
Also add:
Titanium dioxide 5.0 5.00 Chrome Oxide 1.0 1.00
Comments:
Yellow green. Paler on edges. Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Soda feldspar 32.5 32.50 Silica 24.2 24.17 Zinc oxide 8.3 8.33 Gerstley borate 8.3 8.33 Dolomite 15.8 15.83 Bone ash 10.8 10.83 ----- -------- Totals: 100.0 99.99
Also add:
Red iron oxide 10.8 10.83
Comments:
Almost an iron red. Orange where thick. Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Barium carbonate 36.7 36.73 Nepheline syenite 59.2 59.19 Ball clay 4.1 4.08 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt oxide 0.5 0.51
Comments:
Dry. Adhered well Pale blue with vivid mid blue speckles. Great for sculpture Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Soda feldspar 45.5 45.45 Silica 33.3 33.33 Whiting 4.0 4.04 Talc 7.1 7.07 Kaolin 5.1 5.05 Soda ash 5.1 5.05 ----- -------- Totals: 100.0 99.99
Also add:
Tin oxide 10.1 10.10
Comments:
A nice 'shino-like' white breaking to orange Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Gerstley borate 21.0 21.00 Nepheline syenite 16.0 16.00 Kaolin 11.0 11.00 Whiting 20.0 20.00 Silica 32.0 32.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 5.0 5.00 Chrome oxide 0.2 0.15
Comments:
Excellent red/pink. Purple/mauve where thick Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 55.6 55.56 Barium carbonate 41.4 41.41 Zinc oxide 3.0 3.03 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 2.0 2.02
Comments:
A very nice dry glaze. Great for sculpture. Varying from a pale blue tint to a turquoise tint. Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 55.6 55.56 Barium carbonate 41.4 41.41 Zinc oxide 3.0 3.03 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 2.0 2.02 Cobalt carbonate 1.0 1.01 Rutile 5.1 5.05
Comments:
Dry. Mid grey/blue with yellow green flecks. Good for sculpture Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 25.5 25.45 Magnesium carbonate 9.1 9.09 Zinc oxide 13.6 13.64 Gerstley borate 11.8 11.82 Kaolin 7.3 7.27 Silica 32.7 32.73 ----- -------- Totals: 100.0 100.00
Comments:
Semi matt white. No craze Excellent Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Barium carbonate 5.1 5.05 Gerstley borate 10.1 10.10 Magnesium carbonate 5.1 5.05 Whiting 11.1 11.11 Potash feldspar 16.2 16.16 Soda feldspar 16.2 16.16 Ball clay 5.1 5.05 Silica 31.3 31.31 ----- -------- Totals: 100.0 99.99
Also add:
Cobalt carbonate 0.5 0.51 Rutile 3.0 3.03
Comments:
Shiny pale blue where thin. Nice streaky blue where thicker. Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 33.3 33.33 Whiting 33.3 33.33 Ball clay 33.3 33.33 ----- -------- Totals: 100.0 99.99
Comments:
Matt. Stony white with yellow patches. Orange flashing on the edges. Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 50.0 50.00 Dolomite 22.5 22.50 Kaolin 15.0 15.00 Bone ash 7.5 7.50 Lithium carbonate 2.5 2.50 Zinc oxide 2.5 2.50 ----- -------- Totals: 100.0 100.00
Also add:
Iron Oxide 2.5 2.50 Chromium oxide 1.3 1.25
Comments:
Semi matt orange/tan Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 67.0 67.00 Dolomite 10.0 10.00 Kaolin 8.0 8.00 Silica 9.0 9.00 Zinc oxide 6.0 6.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 3.0 3.00
Comments:
Shiny. Soft green with pink flecks. Very good Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 35.6 35.62 Whiting 26.7 26.71 Barium carbonate 12.5 12.47 Zinc oxide 0.3 0.27 Kaolin 10.7 10.69 Zirconium silicate 8.0 8.01 Ball clay 4.5 4.45 Lithium carbonate 1.8 1.78 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 1.3 1.34 Manganese dioxide 1.3 1.34 Cobalt oxide 0.2 0.22
Comments:
Semi matt. Green/ble breaking to pale blue Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 22.3 22.35 Wollastonite 22.3 22.35 Gerstley borate 20.1 20.11 Ball clay 11.2 11.17 Barium carbonate 11.2 11.17 Zirconium silicate 10.1 10.06 Lithium carbonate 2.8 2.79 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt oxide 1.1 1.12
Comments:
Semi matt. Pale blue with darker flecks. Darker blue where pooled or thick Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 40.0 40.00 Zinc oxide 4.0 4.00 Dolomite 3.0 3.00 Whiting 15.0 15.00 Kaolin 5.0 5.00 Silica 33.0 33.00 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 4.0 4.00
Comments:
Shiny dark orange/brown Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 34.0 34.00 Silica 41.0 41.00 Whiting 17.0 17.00 Kaolin 8.0 8.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 10.0 10.00 Chrome oxide 0.5 0.50
Comments:
Shiny strong pink. Very good Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 66.1 66.09 Lithium carbonate 2.9 2.91 Whiting 8.7 8.74 Talc 11.7 11.65 Magnesium carbonate 3.9 3.85 Gerstley borate 6.8 6.76 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 3.9 3.85
Comments:
For orange add 4.0% Rutile. Here a the glazes we've found work out OK, and are currently studio shop glazes. We have noticed that a slightly heavier reduction is needed for cone 6 than in cone 9/10. submitted by: Candice Roeder e-mail: CRoeder1@aol.com
Recipe: (Percent, Batch)
Whiting 23.9 23.91 Custer feldspar 49.7 49.73 EPK 13.2 13.18 Flint 13.2 13.18 ----- -------- Totals: 100.0 100.00
Also add:
Titanium dioxide 11.3 11.29 Silicon carbide 0.3 0.34
Comments:
Rough glaze. Fine silicon carbide works best. Variations -- Grey-to-black: +7% Mason 6600
Recipe: (Percent, Batch)
Flint 29.6 29.59 Gerstley borate 21.1 21.11 Nepheline syenite 12.3 12.32 Talc 11.8 11.83 Dolomite 11.8 11.83 Kentucky OM #4 8.3 8.28 Spodumene 5.0 5.03 ----- -------- Totals: 100.0 99.99
Also add:
Cobalt carbonate 2.0 2.00
Comments:
Nice differences tween thick and thin applications, and sort of periwinkle where it breaks over carved edges. Bob Kavanaugh, do you recognize this? It's the white satin you sent me about a year ago. I've been playing with it! Thanks for the recipe! Kat Neely-Jones Salem, Oregon solvejgma@aol.com
Recipe: (Percent, Batch)
Custer feldspar 26.2 26.18 Silica 25.3 25.28 EPK 14.0 14.04 Frit 3134 14.0 14.04 Whiting 10.2 10.23 Dolomite 5.6 5.62 Barium carbonate 4.6 4.61 ----- -------- Totals: 100.0 100.00
Comments:
Parker Gloss and Gronborg Clear are very similar. I include both because the coefficient of expansion is just different enough for you to tell which way to go if they do not fit your body. And, yes, I know they all have barium in them. Not much, though, so you could probably substitute 3/4 as much strontium carb, and not affect them much, or possibly just leave it out. I hope this helps. Paul Lewing http://digitalfire.com/magic/lewing.htm pjlewing@aol.com
Recipe: (Percent, Batch)
Magnesium carbonate 31.0 31.00 Talc theoretical 8.0 8.00 Zinc oxide 6.0 6.00 Frit P-25 6.0 6.00 Soda spar 30.0 30.00 Kaolin 19.0 19.00 ----- -------- Totals: 100.0 100.00
Comments:
To achieve a cracked-earth effect, some cracks should show before firing.
Recipe: (Percent, Batch)
Soda feldspar 30.0 30.00 Magnesium carbonate 30.0 30.00 Ferro Frit 3134 10.0 10.00 Talc 10.0 10.00 Kaolin 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
A few years ago I participated in a workshop with Randy Brodnax who works with lichen glazes, among other techniques. His recipes follow. We covered the bisqued pot with the black englobe, (brushed on) and then dipped the pot in the lichen glaze. Then colored commercial underglazes were sprayed on the glaze. Wonderful effects. The black engobe gives better contrast with the lichen glaze. I also tried the lichen glaze both over and under my regualr cone six glazes, some very interesting, very nice effects. try it. submitted by: Kathy Darby e-mail: kdarby@TMN.COM source for original recipe: Randy Brodnax
Recipe: (Percent, Batch)
Ferro Frit 3124 75.0 75.00 EPK 12.5 12.50 Potash feldspar 12.5 12.50 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 25.0 25.00 Cobalt carbonate 0.6 0.62
Comments:
submitted by: Ken on Cape Cod e-mail: ktighe@capecod.net
Recipe: (Percent, Batch)
Gerstley borate 46.0 46.00 EPK 16.0 16.00 Silica 38.0 38.00 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 10.0 10.00
Comments:
Used powdered rutile. Here's a peach I've developed; maybe it will give you a starting point. Be sure to try it at different thicknesses. I've fired it from cone 5-8 with best results at a high cone 6 or low 7. Can get runny at 7 if applied too thick. Good luck! submitted by: Darlene Yarnetsky -- Mudcat Pottery Madison IN e-mail: jyarnet@ideanet.doe.state.in.us
Recipe: (Percent, Batch)
Nepheline syenite 47.3 47.30 Gerstley borate 27.0 27.00 Silica 20.3 20.30 EPK 5.4 5.40 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 2.0 2.00 Cobalt oxide 1.0 1.00 Rutile 4.0 4.00
Comments:
Recipe: (Percent, Batch)
Kona F-4 spar 53.5 53.00 Whiting 6.1 6.00 Strontium carbonate 19.2 19.00 Frit 3124 5.1 5.00 Clay 5.1 5.00 Flint 11.1 11.00 ----- -------- Totals: 100.0 99.00
Also add:
Copper Carb 2.0 2.00
Comments:
Smooth polished marble type base, semi-opaque. Copper gives blue, Manganese a pink violet and iron a yellow straw. Colors in Ox or Red? Glaze Type: Ba Ca. Opacity: Semi-opaque. Firing type: Ox or Red .
Recipe: (Percent, Batch)
Nepheline Sye 50.0 50.00 Dolomite 15.0 15.00 Whiting 2.0 2.00 Zinc oxide 8.0 8.00 Clay 15.0 15.00 Flint 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
White opaque smooth dry mat. Color tends to go flat, very dense glaze. Glaze name originally listed as "Lydahl???" Is it really a Lydahl glaze? TD Glaze Type: Ca Zn Mg Na AlMatt. Opacity: Opaque. Firing type: Ox or Red .
Recipe: (Percent, Batch)
Gerstley borate 10.0 10.00 Frit 3134 10.0 10.00 Custer spar 25.0 25.00 Silica 19.0 19.00 EPK 18.0 18.00 Dolomite 6.0 6.00 Wollastonite 12.0 12.00 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 15.0 15.00
Comments:
From Suzanne Storer in Ogden, UT sstorer@utah-inter.net A more melted version than H that may show more dotting.
Recipe: (Percent, Batch)
Dolomite 5.0 5.00 Gerstley borate 33.0 33.00 Talc theoretical 3.0 3.00 Custer feldspar 25.0 25.00 EPK 13.0 13.00 Flint 21.0 21.00 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 15.0 15.00
Comments:
From CM Apr 1980, Kevin Byrne: Majolica Techniques at Cone 4 Variations -- Color for decorating: Green: 5 parts CuCO3 + 3 CrO + 2 rutile Red-brown: 9 parts deep red-brown stain + 18 parts neph sy Blue-green" 7 part CrO + 14 CoO + 7 neph sy Brown: 3 parts MnO2 + 1 rutile + 2 neph sy Blue: any amount of cobalt oxide and water. Will spit in firing.
Recipe: (Percent, Batch)
Gerstley borate 31.4 33.00 Custer feldspar 23.8 25.00 Flint 20.0 21.00 EPK 17.1 18.00 Dolomite 4.8 5.00 Talc theoretical 2.9 3.00 ----- -------- Totals: 100.0 105.00
Also add:
Zircopax 14.3 15.00
Comments:
From Suzanne Storer. My colorants consist of mason stains ground with the glaze in a mortar and pestal in parts 1/1 or 1/2 stain to glaze. Duncan ez strokes over the base white also work very well. Some, like EZ Coral Red need to be fired only to cone 4 as they bubble at a higher temp.
Recipe: (Percent, Batch)
Gerstley borate 10.0 10.00 Frit 3134 14.0 14.00 Custer spar 28.0 28.00 Wollastonite 20.0 20.00 EPK 28.0 28.00 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 18.1 18.07 Bentonite 2.4 2.41
Comments:
From Suzanne Storer. A stiffer version than Version A that shows less white dotting.
Recipe: (Percent, Batch)
Whiting 14.8 13.40 Custer feldspar 3.9 3.50 EPK 8.1 7.40 Flint 15.3 13.90 Zircopax 22.0 20.00 Frit 3124 35.9 32.60 ----- -------- Totals: 100.0 90.80
Comments:
Re-calculated to eliminate GB. Untested. Add CMC gum if needed to harden the surface. Reported to fit cone 10 porcelain fired to cone 6. Use 50 stain/50 frit over. Add CMC or liquid starch for better brushing. On Arbuckle majolica handout.
Recipe: (Percent, Batch)
Gerstley borate 20.7 20.70 Nepheline syenite 16.3 16.30 EPK 11.4 11.40 Whiting 19.5 19.50 Flint 32.2 32.20 ----- -------- Totals: 100.0 100.10
Also add:
Zircopax 12.0 12.00
Comments:
Add CMC gum if needed to harden the surface. Reported to fit cone 10 porcelain fired to cone 6. Use 50 stain/50 frit over. Add CMC or liquid starch for better brushing.
Recipe: (Percent, Batch)
Pemco frit P-54 27.3 27.30 Nepheline syenite 4.1 4.10 Calcined kaolin 8.6 8.60 EPK 10.1 10.10 Whiting 19.7 19.70 Flint 30.1 30.10 ----- -------- Totals: 100.0 99.90
Also add:
Zircopax 25.0 25.00
Comments:
Variation of Mid-range Majolica that replaces Gerstley borate with a frit to eliminate surface blemishes of the overglaze majolica colorants. Ferro Frit 3134 can be substituted for Pemco Frit P-54. Good as a majolica-like opaque white glaze with oxides and stains brushed over it. Very stable - does not run, applies well with a brush or by other methods. Doesn't craze on cone 10 porcelain fired to cone 6 - test on cone 6 body. Tested on Aardvark stoneware clays: (listed best to worst for smooth surface) Porcelain, Hopkins White 60, Joe Soldate 60, Rio Red (the last two may have a fairly gritty surface, even at cone 6). Possible Glaze Flaws: This glaze is fairly powdery without any binder. It will crawl slightly if applied too thickly followed by a wash of color on the raw glaze. YOU MUST add CMC to glaze batch to harden the raw surface of this glaze. Use about one tablespoon of CMC powder (soaked in a pint of hot water overnight) per 3000 gram batch. Colors: Use mason stains mixed 50/50 with Pemco frit P-25 or Ferro Frit 3124, or use 70 stain/30 gerstley borate in a watery mix for colors over glaze or some combination of gerstley borate and frit. Using too much gerstley borate may make the stain change color or become pastel. Purple stains may need to have more flux added up to 3 parts flux to 1 part stain. If you use all frit, add liquid starch or CMC to colors for easier brushing and to minimize smearing before they're fired. A small amount of bentonite may also help to keep the all-frit mixture from settling out. These binders are not as necessary with the gerstley borate. Use these Duncan EZ-stroke transparent underglazes as overglaze wash for color: EZ003, EZ004, EZ007, EZ012, EZ014, EZ019, EZ020, EZ021, EZ024, EZ025, EZ027, EZ028, EZ030, EZ032, EZ161. Almost all the other EZstrokes will work, especially if thinned slightly. The dark blue and the orange EZstrokes will wrinkle and get rough if applied too thickly. Cover coat CC 154 should work as well. Most other Cover Coat colors will work when thinly applied, but may be dry if thick. Try adding a teaspoonful of frit or gerstley borate to a jar of CC underglaze for glossier color. Other color possibilities include washes of the common colorants (mix chrome and rutile 50/50 with gerstley borate or frit). A thin red iron or red earthenware slip or possibly a red terra sigillata on the foot or other exposed clay areas makes a nice contrast if used on a white clay body. Richard Burkett 1991. Other color possibilities: A nice dark blue green with: 2% cobalt carb + 3% chrome oxide + 2% black iron oxide added to the glaze. SDSU 1992
Recipe: (Percent, Batch)
Gerstley borate 5.3 5.30 Nepheline syenite 33.1 33.10 EPK 4.6 4.60 Dolomite 2.3 2.30 Whiting 9.4 9.40 Flint 45.3 45.30 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 10.1 10.10 Bentonite 3.3 3.30 Epsom salts 0.6 0.60
Comments:
From Linda Litteral - SDSU Glaze class 1996. She called it 'A-7 Chinese.' Tested for new Midrange majolica for class use. Almost boron free - good for stain colors that are subject to dissolving in boron glazes. Very stable, does not move during firing unless quite thick. Will crawl slightly if very thick. Applies well either by dipping or brushing. Works well with almost all Duncan EZ-Stroke underglaze colors as majolica washes, as do Amaco velvet red versions of the zirconium encapsulted red stains. Probably most stains would work well also. Color possibities: Use mason stains mixed 50/50 with Pemco frit P-25 or Ferro Frit 3124, or use 70 stain/30 gerstley borate in a watery mix for colors over glaze or some combination of gerstley borate and frit. Using too much gerstley borate may make the stain change color or become pastel. Purple stains may need to have more flux added up to 3 parts flux to 1 part stain. If you use all frit, add liquid starch or CMC to colors for easier brushing and to minimize smearing before they're fired. Use these Duncan EZ-stroke transparent underglazes as overglaze wash for color: EZ003, EZ004, EZ007, EZ012, EZ014, EZ019, EZ020, EZ021, EZ024, EZ025, EZ027, EZ028, EZ030, EZ032, EZ161. Almost all the other EZstrokes will work, especially if thinned slightly. The darker blues EZstrokes will wrinkle and get rough if applied too thickly. CoverCoat CC 154 should work as well. Most other CoverCoat colors will work when thinly applied, but may be dry if thick. Try adding a teaspoonful of frit or gerstley borate to a jar of CC underglaze for glossier color. Other color possibilities include washes of the common colorants (mix chrome and rutile 50/50 with gerstley borate or frit). A thin red iron or red earthenware slip or possibly a red terra sigillata on the foot or other exposed clay areas makes a nice contrast if used on a white clay body. *Variations: Other color possibilities: A nice dark blue green with: 2% cobalt carb + 3% chrome oxide + 2% black iron oxide added to the glaze. Or almost any commercial stain added to the glaze in 5-12% amounts. *How long have you been using this glaze? About a year. *Where is it used? San Diego State University *Where did this recipe come from? From Linda Litteral - SDSU Glaze class 1996. She called it 'A-7 Chinese.' *What do you like most about this glaze? very stable, good support for most stain colors *Is this glaze reliable? very, but like many majolica glazes it may crawl if applied too thickly. *Does this glaze tend to craze/crawl/pinhole/etc.? like many majolica glazes it may crawl if applied too thickly. *How do different firing temperatures/atmospheres affect the glaze? should work in oxidation or reduction firings, but not with all stain colors. *How does the glaze behave on different clay bodies? best on finer textured clays or smooth, well-ribbed surfaces if used on more heavily grogged clay bodies. *How thickly should the glaze be applied to the pot? medium (average) application for best opacity. may crawl if too thick. *How does this glaze interact with other glazes? should work with most other glazes like any typical white gloss glaze, due to the low boron content *What is your kiln type and size? Alpine Globar, approx 8 cu. ft. *How do you typically fire? 6-8 hour heating, 24-36 hour cooling, no soak. *Do you experience problems with the raw glaze? may settle badly without the bentonite/epsom salt addition. Adding a small amount of CMC gum solution may also help a bit and harden the raw glaze surface. *GlazeBase Glaze* Submitted by: Richard Burkett (richard.burkett@sdsu.edu) Ice Cream Flavor: Ben and Jerry's Pistachio -------------------------------------------------------------------- ----
Recipe: (Percent, Batch)
Dolomite 2.3 2.30 Whiting 8.8 8.70 Feldspar 36.2 35.80 EPK 5.9 5.80 Flint 36.1 35.70 Frit 3124 10.6 10.50 ----- -------- Totals: 100.0 98.80
Also add:
Zircopax 12.1 12.00 Bentonite 2.0 2.00 Epsom salts 0.6 0.60
Comments:
Revised to avoid using Gerstley Borate (no longer mined) and Neph Sy (deflocculates glaze) From Linda Litteral - SDSU Glaze class 1996. She called it 'A-7 Chinese.' Tested for new Midrange majolica for class use. Almost boron free - good for stain colors that are subject to dissolving in boron glazes. Very stable, does not move during firing unless quite thick. Will crawl slightly if very thick. Applies well either by dipping or brushing. Works well with almost all Duncan EZ-Stroke underglaze colors as majolica washes, as do Amaco velvet red versions of the zirconium encapsulted red stains. Probably most stains would work well also. Color possibities: Use mason stains mixed 50/50 with Pemco frit P-25 or Ferro Frit 3124, or use 70 stain/30 gerstley borate in a watery mix for colors over glaze or some combination of gerstley borate and frit. Using too much gerstley borate may make the stain change color or become pastel. Purple stains may need to have more flux added up to 3 parts flux to 1 part stain. If you use all frit, add liquid starch or CMC to colors for easier brushing and to minimize smearing before they're fired. Use these Duncan EZ-stroke transparent underglazes as overglaze wash for color: EZ003, EZ004, EZ007, EZ012, EZ014, EZ019, EZ020, EZ021, EZ024, EZ025, EZ027, EZ028, EZ030, EZ032, EZ161. Almost all the other EZstrokes will work, especially if thinned slightly. The darker blues EZstrokes will wrinkle and get rough if applied too thickly. CoverCoat CC 154 should work as well. Most other CoverCoat colors will work when thinly applied, but may be dry if thick. Try adding a teaspoonful of frit or gerstley borate to a jar of CC underglaze for glossier color. Other color possibilities include washes of the common colorants (mix chrome and rutile 50/50 with gerstley borate or frit). A thin red iron or red earthenware slip or possibly a red terra sigillata on the foot or other exposed clay areas makes a nice contrast if used on a white clay body. *Variations: Other color possibilities: A nice dark blue green with: 2% cobalt carb + 3% chrome oxide + 2% black iron oxide added to the glaze. Or almost any commercial stain added to the glaze in 5-12% amounts. *How long have you been using this glaze? About a year. *Where is it used? San Diego State University *Where did this recipe come from? From Linda Litteral - SDSU Glaze class 1996. She called it 'A-7 Chinese.' *What do you like most about this glaze? very stable, good support for most stain colors *Is this glaze reliable? very, but like many majolica glazes it may crawl if applied too thickly. *Does this glaze tend to craze/crawl/pinhole/etc.? like many majolica glazes it may crawl if applied too thickly. *How do different firing temperatures/atmospheres affect the glaze? should work in oxidation or reduction firings, but not with all stain colors. *How does the glaze behave on different clay bodies? best on finer textured clays or smooth, well-ribbed surfaces if used on more heavily grogged clay bodies. *How thickly should the glaze be applied to the pot? medium (average) application for best opacity. may crawl if too thick. *How does this glaze interact with other glazes? should work with most other glazes like any typical white gloss glaze, due to the low boron content *What is your kiln type and size? Alpine Globar, approx 8 cu. ft. *How do you typically fire? 6-8 hour heating, 24-36 hour cooling, no soak. *Do you experience problems with the raw glaze? may settle badly without the bentonite/epsom salt addition. Adding a small amount of CMC gum solution may also help a bit and harden the raw glaze surface. *GlazeBase Glaze* Submitted by: Richard Burkett (richard.burkett@sdsu.edu) Ice Cream Flavor: Ben and Jerry's Pistachio -------------------------------------------------------------------- ----
Recipe: (Percent, Batch)
Whiting 5.0 5.00 Frit 3124 40.0 40.00 Kona F-4 feldspar 15.0 15.00 Nepheline syenite 15.0 15.00 EPK 12.0 12.00 Flint 13.0 13.00 ----- -------- Totals: 100.0 100.00
Also add:
Superpax 12.0 12.00 CMC 10.0 10.00
Comments:
CMC gum is added as a solution of 15 grams CMA gum in 1 liter of water.
Recipe: (Percent, Batch)
Kona F-4 feldspar 34.0 34.00 Wollastonite 20.0 20.00 Kentucky OM #4 10.0 10.00 Gerstley borate 16.0 16.00 Flint 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax Plus 15.0 15.00
Comments:
From Vina Schemer VinaClay@aol.com Variations -- In place of zircopax, you can use 10% tin oxide. May cause chrome-tin pinking w/chrome colors
Recipe: (Percent, Batch)
Ball clay 20.0 20.00 F-4 spar 50.0 50.00 Gerstley borate 10.0 10.00 Whiting 15.0 15.00 Flint 5.0 5.00 ----- -------- Totals: 100.0 100.00
Comments:
From Cyndi Gehr @ Univ. of FL Variations -- Maroon: 10% Mason Blackberry Wine stain
Recipe: (Percent, Batch)
Nepheline syenite 29.0 27.00 Whiting 3.2 3.00 Strontium carbonate 30.8 28.71 Lithium carbonate 1.6 1.50 Grolleg 11.8 11.00 Flint 23.6 22.00 ----- -------- Totals: 100.0 93.21
Also add:
Bentonite 2.1 2.00
Comments:
Recipe: (Percent, Batch)
Wollastonite 33.9 33.88 Ferro Frit 3134 21.1 21.10 Kaolin 45.0 45.01 ----- -------- Totals: 100.0 99.99
Comments:
Smooth, beautiful matte surface submitted by: Michelle Campbell e-mail: Lackacreek@ccinet.ab.ca source for original recipe: Plainsman Clays
Recipe: (Percent, Batch)
Nepheline syenite 30.0 30.00 Frit 3110 25.0 25.00 Barium carbonate 10.0 10.00 Whiting 15.0 15.00 EPK 10.0 10.00 Flint 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Variations -- Lt. Blue 1% copper carb Yellow w/Orange-greenish streaks (reduct) 5% RIO Pinkish-purple + 1% Mn Diox.
Recipe: (Percent, Batch)
Nepheline syenite 57.5 57.50 Strontium carbonate 26.5 26.50 Kentucky OM #4 6.2 6.20 Flint 7.1 7.10 Lithium carbonate 2.7 2.70 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 3.0 3.00
Comments:
From Geoffrey Wheeler Geoffreywheeler@hotmail.com Variations -- My most used colorants: Zirconium yellow Vanadium yellow Victoria green Shell Pink Coral Manganese carb Cobart carb Copper carb Black nickel oxide
Recipe: (Percent, Batch)
Nepheline syenite 57.5 57.50 Strontium carbonate 26.5 26.50 Kentucky OM #4 6.2 6.20 Flint 7.1 7.10 Lithium carbonate 2.7 2.70 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00
Comments:
From Geoff Wheeler. Variations -- Most-used colorants: Zirconium yellow vanadium yellow Victoria Green Shell Pink Coral Mn Carb Co Carb Cu Carb black Ni oxide
Recipe: (Percent, Batch)
Neph Syenite 60.0 60.00 Barium carbonate 24.0 24.00 Lithium carbonate 5.0 5.00 EPK 6.0 6.00 Flint 5.0 5.00 ----- -------- Totals: 100.0 100.00
Comments:
additions: Base no Additions White Matt Red Iron Oxide 3% Yellow Matt Copper Carb 2% Turqoise Matt Colbalt Carb 1% Sky Blue Matt Manganese Diox 2% Purple Matt Chrome Ox 2% Green (oxidized copper) Matt Nickel Ox 2% Grey Matt
Recipe: (Percent, Batch)
Custer feldspar 40.0 40.00 Frit 3124 9.0 9.00 Talc theoretical 9.0 9.00 Whiting 16.0 16.00 EPK 10.0 10.00 Flint 16.0 16.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Ca Mg. Firing type: Ox or Red. From Val Cushing. VC ed
Recipe: (Percent, Batch)
Wollastonite 50.0 50.00 Kona F-4 feldspar 20.0 20.00 EPK 20.0 20.00 Frit 3134 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Variations -- +zircopx 10
Recipe: (Percent, Batch)
Nepheline syenite 57.5 57.50 Strontium carbonate 26.5 26.50 Kentucky OM #4 6.2 6.20 Flint 7.1 7.10 Lithium carbonate 2.7 2.70 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 3.0 3.00
Comments:
Recipe: (Percent, Batch)
Potash feldspar 40.0 40.00 Zinc oxide 15.0 15.00 China clay 20.0 20.00 Whiting 25.0 25.00 ----- -------- Totals: 100.0 100.00
Comments:
Here are a couple of C 6 glazes that I use with my speckled brownstone in ox. A very even matt when well applied. Below C6 can be dry and scaly. The success of this glaze depends on the clay body. As stated from the book. I like the way it looks with Randy's Red and I have used it in combination with other colored glazes with good luck. submitted by: Jan Henkel e-mail: jhenkel@sunbelt.net source for original recipe: Electric Pottery by E. Cooper.
Recipe: (Percent, Batch)
Nepheline syenite 71.5 71.46 Dolomite 23.7 23.71 Ball clay 4.8 4.83 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 9.6 9.55 Bentonite 2.8 2.81
Comments:
About l978 Ruth Duckworth used a glaze in Banff that was called this with 5% Rutile or Ilemanite. I loved the glaze. Satiny silver-white. submitted by: ELKE BLODGETT email: eiblodge@freenet.edmonton.ab.ca
Recipe: (Percent, Batch)
Alberta slip 70.0 70.00 Ferro frit 3124 20.0 20.00 Wollastonite 10.0 10.00 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 5.0 5.00 Mason Stain 6600 5.0 5.00 Bentonite 2.0 2.00
Comments:
Here's a recipe I used just recently for a dinnerset and it works very well. Has a nice matte finish and is good for food surfaces. I experimented with increasing amounts of black stain (I think that's a mason #?..in any event, not the stain with the cobalt base) up to an additional 10% and they were all good. submitted by: Dan Taylor e-mail: dataylor@mlc.awinc.com
Recipe: (Percent, Batch)
Dolomite 10.9 10.90 Wollastonite 18.1 18.10 Nepheline syenite 36.2 36.20 EPK 18.1 18.10 Gerstley borate 16.7 16.70 ----- -------- Totals: 100.0 100.00
Comments:
I use a fairly dark clay body so your results may be quite different. good luck with the yellows. submitted by: Mary Kuilema e-mail: kuil@k2.iserv.net Variations -- add 5% zircopax and 8% mason st. 6485 for a light, delicate yellow.
Recipe: (Percent, Batch)
F-4 feldspar 45.0 45.00 Whiting 18.0 18.00 Kentucky OM #4 25.0 25.00 Zinc oxide 12.0 12.00 ----- -------- Totals: 100.0 100.00
Comments:
Recipe: (Percent, Batch)
Wollastonite 53.4 53.30 Kona F-4 feldspar 22.8 22.80 EPK 13.8 13.80 Frit 3134 9.5 9.50 Gerstley borate 0.5 0.50 ----- -------- Totals: 100.0 99.90
Comments:
From Kristen Kieffer. Orig. called for 18.2% EPK, but crazed. 8.2% too flat, so 13.2% gives good depth/little crazing. Variations -- Cadet #6302 2-5% Blackberry #6381 3-8% Turquoise #6364 2-6% Deep Salmon #6031 3-5% Black Nickel 1-2% Golden Ambrosia #6129 5% Amethyst 3-5% Peacock #6396 2-4% Saturn Orange #6121 3-5% Fawn #6104 5-8%
Recipe: (Percent, Batch)
Cornwall Stone 45.0 45.05 EPK 19.8 19.82 Dolomite 20.7 20.72 Whiting 5.4 5.41 Talc theoretical 9.0 9.01 ----- -------- Totals: 100.0 100.01
Comments:
% Weight Ananlysis SiO2 56.94, P2O5 0.29, Al2O3 17.58, Fe2O3 0.29, MgO 8.82, CaO 12.07, Na2O 1.77, K2O 2.38. I regularly use a glaze at cone 8 over coloured slips which is matt but lets the coloured slips show through. This is in oxidation over a buff stoneware glaze. In case this sounds what you are after and interesting to you, I give the recipe below, which I have translated from the UK sourced materials that I use, into North American materials. Actually the difference is very small. submitted by: David Hewitt e-mail: david@dhpot.demon.co.uk
Recipe: (Percent, Batch)
Nepheline syenite 38.7 38.70 Wollastonite 15.2 15.20 Strontium carbonate 15.2 15.20 Silica 10.5 10.50 EPK 10.2 10.20 Gerstley borate 10.2 10.20 ----- -------- Totals: 100.0 100.00
Comments:
From George Bowes.
Recipe: (Percent, Batch)
Custer feldspar 48.0 48.00 Barium carbonate 25.0 25.00 Zinc oxide 15.0 15.00 Silica 6.0 6.00 Whiting 6.0 6.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00 Green nickel oxide 2.0 2.00
Comments:
From Lana Wilson in Clay Times Jan/Feb. 2001 p 43. Mauve purple thick, navy blue specks where thin. richer on red clay. Refire to cone 06 to get gray and purple.
Recipe: (Percent, Batch)
Silica 20.8 21.00 Nepheline syenite 19.8 20.00 Whiting 19.8 20.00 EPK 19.8 20.00 Frit 3124 19.8 20.00 ----- -------- Totals: 100.0 101.00
Comments:
Follow slow cooling. From Ray Gonzalez.
Recipe: (Percent, Batch)
Custer feldspar 30.0 30.00 Zinc oxide 30.0 30.00 siil 18.0 18.00 Whiting 8.0 8.00 Strontium carbonate 7.3 7.30 EPK 5.4 5.40 Dolomite 1.3 1.30 ----- -------- Totals: 100.0 100.00
Comments:
From George Bowes.
Recipe: (Percent, Batch)
Gerstley borate 2.9 2.90 Magnesium carb 2.9 2.90 Whiting 22.4 22.40 Nepheline syenite 22.7 22.70 EPK 20.3 20.30 Flint 20.0 20.00 Frit 3124 8.8 8.80 ----- -------- Totals: 100.0 100.00
Comments:
Excellent base glaze. More shiny than matte. For true matte see Val's revised KK base Variations -- Grass green- 8 drakenfield yellow(or MS preseod yellow), 2 copper carb Medium green- 8 drakenfield yelow, 4 copper Pale green- 2 preseodemium yellow MS, .5 copper Pale yellow- 1 drakenfield yellow, .5 turquoise MS Pale blue- 1 sky blue MS, .2 copper carb Pale orange- .25 bright orange degusa stain Medium purple- 5 alpine rose MS, 4 cerulian MS (washes of MS and water are nice under the pale colors)
Recipe: (Percent, Batch)
Nepheline syenite 66.1 66.09 Lithium carbonate 2.9 2.91 Whiting 8.7 8.74 Talc theoretical 11.7 11.65 Magnesium carbonate 3.9 3.85 Gerstley borate 6.8 6.76 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 3.9 3.85
Comments:
Here a the glazes we've found work out OK, and are currently studio shop glazes. We have noticed that a slightly heavier reduction is needed for cone 6 than in cone 9/10. submitted by: Candice Roeder e-mail: CRoeder1@aol.com Variations -- For orange add 4.0% Rutile.
Recipe: (Percent, Batch)
Kona F-4 feldspar 45.0 49.00 EPK 18.3 20.00 Whiting 3.7 4.00 Dolomite 17.4 19.00 Gerstley borate 15.6 17.00 ----- -------- Totals: 100.0 109.00
Also add:
Zircopax 9.2 10.00
Comments:
Variations -- COLORANTS TO TRY: 2 chrome ox 1 cobalt 1 manganese diox. 2 iron
Recipe: (Percent, Batch)
F-4 feldspar 45.0 45.00 Whiting 18.0 18.00 Kentucky OM #4 25.0 25.00 Zinc oxide 12.0 12.00 ----- -------- Totals: 100.0 100.00
Comments:
FORMULA & ANALYSIS ------------------ *CaO........ .46 12.04% *MgO........ .01 .11% *K2O........ .06 2.53% *Na2O....... .12 3.50% *ZnO........ .36 13.49% Fe2O3...... .00 .32% TIO2....... .01 .42% AL2O3...... .37 17.61% SiO2....... 1.79 49.97% P2O5....... RATIO 4.82 EXPAN 592.94 WEIGHT 214.43 I have test results for the original simple glaze and Ron's 2 complicated versions. All 3 glazes were tested on white and red stoneware, vertical and horizontal tiles. They were all fired in the bottom half of my Skutt to cone 6 electric. The firing took approzimately 12 hours with a 1 hour soak at top temp. I added 2% rutile to all the glazes to test for color response, and used OM4 ball clay (instead of bell dark). I was somewhat surprised at how similar the glazes came out. The vertical tiles were virtually identical. All three were a soft gray opaque matt. My white stoneware has a little granular illmenite in it, and small spots bleed through. I double dipped 1/2 of each tile, and the glaze ran just a little. There was no discernable crazing. The horizontal tiles had noticable differences. These tiles were more mottled than the vertical ones, kind of like on oatmeal effect. The original glaze was a warmer gray than either of the 2 complex versions. The second complex version, where thick, was dry and sugary, and more silvery than either of the other 2. On all tiles, the red stoneware was more of a tan color than the white. Terri Storer storer@earthlink.net Variations by Ron Roy: complicated version #1 ----------------- F4 SPAR 22.00 22.00% CUSTER SPAR 22.00 22.00% WHITING 18.50 18.50% OM-4 Ball Clay 11.50 11.50% EPK 11.50 11.50% ZINC OXIDE 12.00 12.00% SILICA 2.50 2.50% ---------- 100.00 FORMULA & ANALYSIS ------------------ *CaO........ .46 12.02% *MgO........ .00 .09% *K2O........ .09 3.79% *Na2O....... .09 2.47% *ZnO........ .36 13.57% Fe2O3...... .00 .29% TIO2....... .01 .23% AL2O3...... .37 17.53% SiO2....... 1.80 49.98% P2O5....... .00 .02% RATIO 4.85 EXPAN 597.19 WEIGHT 215.75 My complicated version #2 ----------------- F4 SPAR............. 20.00 20.00% NEPH SY............. 20.00 20.00% WHITING............. 18.00 18.00% BELL DARK........... 11.00 11.00% EPK................. 11.00 11.00% ZINC OXIDE.......... 12.00 12.00% SILICA.............. 8.00 8.00% ---------- 100.00 FORMULA & ANALYSIS ------------------ *CaO........ .45 11.72% *MgO........ .01 .11% *K2O........ .05 2.21% *Na2O....... .13 3.77% *ZnO........ .36 13.53% Fe2O3...... .00 .26% TIO2....... .01 .22% AL2O3...... .38 17.68% SiO2....... 1.82 50.49% P2O5....... .00 .01% COST/KG 1.42 RATIO 4.85 EXPAN 584.18 WEIGHT 216.41 You post these to the list if you want - before or after you test them - what ever you like - but let me know what happenes and include all the recipes cause I don't keep em. Ron Roy 93 Pegasus Trail Scarborough,Canada M1G 3N8 Evenings, call 416 439 2621 Fax, 416 438 7849 Studio: 416-752-7862. Email ronroy@astral.magic.ca Home page http://digitalfire.com/education/people/ronroy.htm
Recipe: (Percent, Batch)
Nepheline syenite 60.0 60.00 Strontium carbonate 20.0 20.00 Grolleg 10.0 10.00 Silica 9.0 9.00 Lithium carbonate 1.0 1.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 5.0 5.00 Titanium dioxide 5.0 5.00
Comments:
From Pete Pinnell. See Clay Times Jan./Feb 2004, Mar./Apr. 2004. AKA Weathered Bronze.
Recipe: (Percent, Batch)
Kona F-4 spar 20.0 20.00 Custer spar 20.0 20.00 Spodumene 20.0 20.00 Dolomite 20.0 20.00 Whiting 5.0 5.00 Kaolin 15.0 15.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 6.0 6.00
Comments:
Nice. Glaze Type: Ca Mg AlMatt. Opacity: . Firing type: Ox or Red .
Recipe: (Percent, Batch)
Albany slip 75.0 75.00 Cornwall Stone 25.0 25.00 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 25.0 25.00
Comments:
Rob Wadey (robert wadey) 9734B - 100 Ave Grande Prairie, Alberta t8V 0T6 Phone: (403) 538-3731 Fax: (403) 538.3732
Recipe: (Percent, Batch)
Nepheline syenite 38.7 38.70 Wollastonite 15.2 15.20 Barium carbonate 15.2 15.20 Gerstley borate 10.2 10.20 EPK 10.2 10.20 Silica 10.5 10.50 ----- -------- Totals: 100.0 100.00
Comments:
black, brown, blue, purple, turquoise, chartreuse, coral, yellow, crimson, and green. RM-54 Black 6% Mason 6600 RM-41 Brown 10% Mason 6153 RM-53 Blue 5% Mason 6313 RM-34 Purple 10% Mason 6385 5% Wollsatonite RM-37 Turquoise 10% Mason 6390 RM-47 Chartreuse 5% Mason 6236 RM-55 Coral 15% Mason 6090 5% Frit 3134 10% Wollastonite RM-50 Yellow 5% Mason 6481 RM-44 Crimson 10% Mason 6006 RM-42 Green 6% Mason 6219 submitted by: Jonathan Kaplan e-mail: 74034.3566@COMPUSERVE.COM source for original recipe: Wayne Bate
Recipe: (Percent, Batch)
Nepheline syenite 57.0 57.10 Strontium carbonate 10.5 10.50 Barium carbonate 10.5 10.50 Lithium carbonate 4.8 4.80 Spodumene 4.8 4.80 Ball clay 7.6 7.60 Flint 4.8 4.80 ----- -------- Totals: 100.0 100.10
Also add:
Copper carbonate 2.0 2.00 Chromium oxide 3.0 3.00
Comments:
From Valerie Duncan. Glittery green over texture.
Recipe: (Percent, Batch)
Nepheline syenite 25.0 25.00 Frit 3124 25.0 25.00 Whiting 20.0 20.00 EPK 15.0 15.00 Flint 15.0 15.00 ----- -------- Totals: 100.0 100.00
Comments:
Good base for color tests.
Recipe: (Percent, Batch)
Barium carbonate 8.2 8.18 Flint 11.8 11.82 Gerstley borate 10.0 10.00 Kaolin 10.0 10.00 Lithium carbonate 4.5 4.55 Nepheline syenite 49.1 49.09 Zinc oxide 1.8 1.82 Cryolite 4.5 4.55 ----- -------- Totals: 100.0 100.01
Also add:
Tin oxide 1.8 1.82 Zircopax 4.5 4.55
Comments:
This produces a soft white matt glaze. One might wish to substitute strontium carbonate for the barium especially for use on functional ware. This glaze contains a great deal of lithium, such glazes may flake off of the ware and one should not use more then 5%. This is a high alumina glaze which shall have a rather modest glaze flow. It will be a soft white matt or a satin matt. Without barium it may be more towards the satin matt texture. Harold J. McWHINNIE Email:Harold_J_McWHINNIE@umail.umd.edu
Recipe: (Percent, Batch)
Whiting 28.6 28.60 Frit 3124 28.6 28.60 EPK 21.4 21.40 Flint 21.4 21.40 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 42.9 42.90
Comments:
From Paul Rozman in CM. With tin, this will be very expensive. Variations -- yellow = +5 iron blue-green= + .03 cobalt carb + 2 copper carb
Recipe: (Percent, Batch)
Gerstley borate 9.1 10.00 EPK 18.2 20.00 Zinc oxide 27.3 30.00 Dolomite 18.2 20.00 Kona F-4 feldspar 27.3 30.00 ----- -------- Totals: 100.0 110.00
Comments:
From Sandy Potash Variations -- Cream= RIO 1 + rutile 2 Blue = rutile 2 + cobalt ox 0.5 blue-green= rutile 2 + cobalt ox 0.5 + copper carb 3
Recipe: (Percent, Batch)
Nepheline syenite 58.8 60.00 Strontium carbonate 23.5 24.00 Lithium carbonate 4.9 5.00 EPK 5.9 6.00 Silica 6.9 7.00 ----- -------- Totals: 100.0 102.00
Comments:
From George Bowes.
Recipe: (Percent, Batch)
Nepheline syenite 60.0 60.00 Strontium carbonate 15.0 15.00 Calcined kaolin 8.0 8.00 Flint 6.0 6.00 Lithium carbonate 6.0 6.00 Gerstley borate 5.0 5.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 3.0 3.00
Comments:
from Mary Barranger Variations -- blue: cobalt 2
Recipe: (Percent, Batch)
Nepheline syenite 59.1 58.50 Strontium carbonate 14.9 14.80 Lithium carbonate 6.0 5.90 Kaolin 8.0 7.90 Flint 2.6 2.60 Frit 3195 9.4 9.30 ----- -------- Totals: 100.0 99.00
Also add:
Copper carbonate 3.0 3.00
Comments:
from Mary Barranger Variations -- blue: cobalt 2
Recipe: (Percent, Batch)
Custer feldspar 52.0 52.00 Whiting 19.0 19.00 Zinc oxide 9.0 9.00 EPK 14.0 14.00 Flint 6.0 6.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Ca Zn AlMatt. Opacity: Semi-transparent. Firing type: Ox or Red .
Recipe: (Percent, Batch)
Kona F-4 feldspar 20.0 20.00 Custer feldspar 20.0 20.00 Spodumene 20.0 20.00 Dolomite 20.0 20.00 Whiting 5.0 5.00 Kaolin 15.0 15.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 6.0 6.00
Comments:
Nice. Glaze Type: Ca Mg AlMatt. Firing type: Ox or Red. From Val Cushing. VC ed
Recipe: (Percent, Batch)
Kona F-4 feldspar 20.0 20.00 Custer feldspar 20.0 20.00 Spodumene 20.0 20.00 Dolomite 20.0 20.00 Whiting 5.0 5.00 Kaolin 15.0 15.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 6.0 6.00
Comments:
Nice. Glaze Type: Ca Mg AlMatt. Firing type: Ox or Red. From Val Cushing. VC ed
Recipe: (Percent, Batch)
Gerstley borate 2.9 2.90 Magnesium carb 2.9 2.90 Whiting 22.4 22.40 Nepheline syenite 22.7 22.70 EPK 25.3 25.30 Flint 15.0 15.00 Frit 3124 8.8 8.80 ----- -------- Totals: 100.0 100.00
Comments:
Beautiful, rich, semi-translucent matte. Use same colorants as KK Variations -- Eggshell- 2 rutile Dark purple- .5 cobalt, 4 Blackberry wine MS Sunny Yellow- 6 Preseodemium Yellow MS, 2.5 Bright orange degusa stain Cherry Red- 9 Red degusa stain
Recipe: (Percent, Batch)
Magnesium carbonate 2.9 2.90 Whiting 22.3 22.30 Nepheline syenite 22.6 22.60 EPK 25.4 25.30 Flint 15.0 15.00 Frit 3124 11.7 11.70 ----- -------- Totals: 100.0 99.80
Comments:
Recipe: (Percent, Batch)
Dolomite 6.1 6.10 Whiting 19.2 19.20 Custer feldspar 32.5 32.50 Calcined kaolin 9.1 9.10 Kaolin - theoretical 15.9 15.90 Silica 9.8 9.80 Frit 3134 7.5 7.50 ----- -------- Totals: 100.0 100.10
Comments:
Glaze in original form crawled. Revised to use dolomite instead of mag carb and to use part calcined kaolin.
Recipe: (Percent, Batch)
Talc theoretical 3.8 3.80 Whiting 19.1 19.10 Potash feldspar - theoretical 36.1 36.10 Kaolin - theoretical 25.8 25.80 Silica 0.4 0.40 Frit 3134 14.8 14.80 ----- -------- Totals: 100.0 100.00
Comments:
Recipe: (Percent, Batch)
Nepheline syenite 38.7 38.70 Wollastonite 15.2 15.20 Barium carbonate 15.2 15.20 Silica 10.5 10.50 EPK 10.2 10.20 Gerstley borate 10.2 10.20 ----- -------- Totals: 100.0 100.00
Comments:
kiln type: gas very white in oxidation, duller in reduction submitted by: John Anthony e-mail: JTRAX@AOL.COM
Recipe: (Percent, Batch)
Spodumene 50.0 50.00 Gerstley borate 25.0 25.00 Flint 25.0 25.00 ----- -------- Totals: 100.0 100.00
Also add:
Black iron oxide 10.0 10.00 Cobalt oxide 2.0 2.00 Copper carbonate 4.0 4.00
Comments:
(wonderful!) Here are a few black cone 6 glazes I gleaned from clayart. If you sub Strontium carb for the Barium in the second they will all be food safe. From Sharon LaRocca-Miranda via Mishy Michelle Lowe, potter in the Phoenix desert mishlowe@indirect.com mishlowe@aztec.asu.edu
Recipe: (Percent, Batch)
Manganese dioxide 60.0 60.00 Copper oxide 10.0 10.00 Redart 20.0 20.00 EPK 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
NOT FOOD SAFE!!! This was very bronze looking. I was amazed. But it is not for food containers. I believe you mentioned that you wanted it for tiles? > > Celia in NC > cwike@conninc.com >Nottingham center for the Arts
Recipe: (Percent, Batch)
Wood ash 25.0 25.00 Nepheline syenite 37.5 37.50 Talc 18.8 18.75 Ball clay 18.8 18.75 ----- -------- Totals: 100.0 100.00
Also add:
Iron oxide 2.5 2.50 Black copper oxide 3.8 3.75 Cobalt oxide 2.9 2.92
Comments:
Other colors (delete black colorants): for matt brown with lots of texture add: Rutile 1.74 Iron Oxide 3.50 Manganese Dioxide 3.50 for matt blue breaking to something greenish add: Cobalt Carbonate 3.00 Rutile 3.00 I've been using the same wood ash formula for about 10 years and have used wood ash from all kinds of known and unknown tree sources (washed and unwashed), fired to cone 6, 7, 8, 9 but mostly to cone 7 in an electric kiln. Write me if you have any questions about these glazes submitted by: Anne Fallis-Elliott e-mail: FallisT@aol.com
Recipe: (Percent, Batch)
China clay 100.0 100.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper oxide 66.0 66.00 Manganese dioxide 300.0 300.00
Comments:
NOT food safe. From Glazes Cone 6 by Michael Bailey
Recipe: (Percent, Batch)
Frit 3195 20.0 20.00 Wollastonite 29.0 29.00 Nepheline syenite 4.0 4.00 EPK 30.0 30.00 Silica 17.0 17.00 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 6.0 6.00 Copper carbonate 4.0 4.00
Comments:
Source: Mighty Mud Mixer. From Ray Gonzalez
Recipe: (Percent, Batch)
Potash feldspar 28.2 28.18 Whiting 18.2 18.18 Talc 9.1 9.09 Kaolin 26.4 26.36 Silica 9.1 9.09 Zinc oxide 9.1 9.09 ----- -------- Totals: 100.0 99.99
Also add:
Tin oxide 4.6 4.55 Chrome oxide 1.8 1.82
Comments:
Semi matt, Pale pink, good From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 28.2 28.18 Whiting 18.2 18.18 Talc 9.1 9.09 Kaolin 26.4 26.36 Silica 9.1 9.09 Zinc oxide 9.1 9.09 ----- -------- Totals: 100.0 99.99
Also add:
Chrome oxide 1.8 1.82 Cobalt carbonate 0.2 0.23
Comments:
Semi matt, apricot/beige, even, good. From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 28.2 28.18 Whiting 18.2 18.18 Talc 9.1 9.09 Kaolin 26.4 26.36 Silica 9.1 9.09 Zinc oxide 9.1 9.09 ----- -------- Totals: 100.0 99.99
Also add:
Iron oxide 0.5 0.45 Chrome oxide 1.8 1.82
Comments:
Semi matt, apricot/tan ok Darker than MMI From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 28.2 28.18 Whiting 18.2 18.18 Talc 9.1 9.09 Kaolin 26.4 26.36 Silica 9.1 9.09 Zinc oxide 9.1 9.09 ----- -------- Totals: 100.0 99.99
Also add:
Tin oxide 4.6 4.55 Manganese dioxide 0.9 0.91
Comments:
Semi matt, off white, faint blue tinge where thicker, good From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 28.2 28.18 Whiting 18.2 18.18 Talc 9.1 9.09 Kaolin 26.4 26.37 Silica 9.1 9.09 Zinc oxide 9.1 9.09 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 4.5 4.55 Praseodymium 7.3 7.27
Comments:
Praseodymium not specified: oxide or stain? Very pale yellow on edges, stronger yellow tint where thicker From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Frit 3124 60.0 60.00 Gerstley borate 10.0 10.00 Flint 10.0 10.00 EPK 10.0 10.00 Whiting 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Ca B. Opacity: . Firing type: Ox or Red .
Recipe: (Percent, Batch)
Nepheline Sye 50.0 50.00 Barium carbonate 10.0 10.00 Frit 3124 5.0 5.00 Whiting 5.0 5.00 Petalite 5.0 5.00 EPK 10.0 10.00 Flint 15.0 15.00 ----- -------- Totals: 100.0 100.00
Comments:
Copper Carbonate (2.0%) produces blue green, Chrome ( 1.0%) produces yellow green. Glaze Type: Na Ca Ba AlMatt. Opacity: . Firing type: Ox or Red .
Recipe: (Percent, Batch)
Gerstley borate 50.0 4000.00 Barnard clay 25.0 2000.00 EPK 25.0 2000.00 ----- -------- Totals: 100.0 8000.00
Comments:
Glaze Type: Ca B. Opacity: Transparent. Firing type: Oxidation .
Recipe: (Percent, Batch)
Gerstley borate 50.0 4000.00 Albany 25.0 2000.00 EPK 25.0 2000.00 ----- -------- Totals: 100.0 8000.00
Comments:
Glaze Type: Ca B SlipGlaze. Opacity: Transparent. Firing type: Ox or Red .
Recipe: (Percent, Batch)
Spodumene 40.0 40.00 Frit 3110 6.0 6.00 Dolomite 12.0 12.00 Whiting 14.0 14.00 EPK 12.0 12.00 Flint 16.0 16.00 ----- -------- Totals: 100.0 100.00
Comments:
Iron (5.0%) gives yellow-brown, cobalt carbonate (1.0%) yields green-lavender to off-white. Glaze Type: Ca Li AlMatt. Firing type: Reduction. From Val Cushing. VC ed
Recipe: (Percent, Batch)
----- -------- Totals: 0.0 0.00
Comments:
Recipe: (Percent, Batch)
Frit 3304 29.0 29.00 Frit 3124 22.0 22.00 Custer feldspar 18.0 18.00 Whiting 12.0 12.00 Georgia kaolin 8.0 8.00 Flint 11.0 11.00 ----- -------- Totals: 100.0 100.00
Comments:
Val Cushing: TESTED OK FOR FOOD.
Recipe: (Percent, Batch)
Gerstley borate 21.0 21.00 Zinc oxide 3.0 3.00 Barium carbonate 9.0 9.00 Custer feldspar 37.0 37.00 Georgia kaolin 9.0 9.00 Flint 21.0 21.00 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 1.5 1.50 Iron oxide 1.5 1.50 Milled Ilmenite 1.5 1.50
Comments:
Val Cushing: TESTED OK FOR FOOD.
Recipe: (Percent, Batch)
Dolomite 23.1 23.00 Spodumene 23.1 23.00 Frit 3134 7.7 7.70 Kentucky OM #4 10.0 10.00 Redart 13.0 13.00 Silica 23.1 23.00 ----- -------- Totals: 100.0 99.70
Also add:
Yellow ochre 2.0 2.00 Tin oxide 4.0 4.00 Red iron oxide 0.5 0.50
Comments:
Speckled buff breaking to rust where thinner. Pottery Making Illus. Jl/Ag 2012. Firing schedule: 100 deg/hr to 200- hold 1 hour to dry 350 deg/hr to 2000 no hold 150 deg/hr to 2185 - hold 15 min 9999 per hr to 1900 no hold 150 per hr to 1500 deg no hold. Variations -- Rosemary Float - yellow green to green w/some crystals where thick: + yellow ochre 1 + copper carb 3.0 For more crystals add rutile 1 Midnight Blue: yellow ochre 1 + cobalt carb 1 + copper carb 1
Recipe: (Percent, Batch)
Spodumene 23.3 23.30 Dolomite 23.3 23.30 Kentucky OM #4 23.3 23.30 Silica 23.3 23.30 Frit 3134 6.8 6.80 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 1.0 1.00 Yellow ochre 3.3 3.25 Tin oxide 5.0 5.00 Bentonite 2.0 2.00
Comments:
Bill Van Gilder. Clay Times Jan/Feb 05 p. 55. Apply thickly.
Recipe: (Percent, Batch)
Custer feldspar 37.3 37.30 Colemanite 12.7 12.70 Dolomite 6.4 6.40 Talc 13.6 13.60 Kaolin 4.5 4.50 Silica 22.7 22.70 Zinc oxide 2.7 2.70 ----- -------- Totals: 100.0 99.90
Comments:
Our Guild has a cone 6 recipe (originally from Connie Pike) which turns very purple if you add 2% cobalt oxide to it. You might try adapting it for higher temperatures. Good luck - purple and lilac sound very Eastery and springlike, which it is NOT, here in Yellowknife, NWT. submitted by: Autumn Downey e-mail: downeya@internorth.com source for original recipe: Connie Pike
Recipe: (Percent, Batch)
F-4 spar 43.5 45.00 Flint 23.2 24.00 Gerstley borate 12.9 13.30 Whiting 8.0 8.30 Dolomite 6.2 6.40 Zinc oxide 3.9 4.00 EPK 2.4 2.50 ----- -------- Totals: 100.0 103.50
Comments:
Variations -- + 8% Mason #6129 Golden Ambrosia
Recipe: (Percent, Batch)
EPK 4.9 4.91 Feldspar 78.9 78.86 Whiting 5.5 5.48 Gerstley borate 10.8 10.75 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 4.1 4.13 Manganese dioxide 4.1 4.13 Cobalt oxide 2.1 2.07
Comments:
Nice shiny black, works nicely with other glazes to get interest effects. Try WG white with this one. Hope you all enjoy them: sue hintz
Recipe: (Percent, Batch)
Albany slip 78.0 78.00 Lithium carbonate 10.0 10.00 Zircopax 12.0 12.00 ----- -------- Totals: 100.0 100.00
Comments:
Are there more ingredients? The end of the recipe is obliterated. Glaze Type: Li Ca Mg Zr SlipGlaze. Opacity: Opaque. Firing type: Ox or Red .
Recipe: (Percent, Batch)
Custer feldspar 53.0 53.00 Whiting 22.0 22.00 Barium carbonate 16.0 16.00 EPK 9.0 9.00 ----- -------- Totals: 100.0 100.00
Comments:
Lots of surface texture. Add: Rutile 2-3% submitted by: GURUSHAKTI@aol.com
Recipe: (Percent, Batch)
Plastic vitrox 44.4 44.40 Gerstley borate 43.2 43.20 Dolomite 12.4 12.40 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 24.8 24.80
Comments:
From George Bowes and Matt Nolen.
Recipe: (Percent, Batch)
Potash feldspar 47.7 46.70 EPK 4.1 4.00 Bone ash 15.3 15.00 Lithium carbonate 4.1 4.00 Talc 17.2 16.90 Flint 11.6 11.40 ----- -------- Totals: 100.0 98.00
Also add:
Red iron oxide 11.2 11.00 Bentonite 2.0 2.00
Comments:
source: Michael Bailey, Glazes Cone 6 This is a "kaki" (plum) saturated iron red. It can be a brilliant red-orange with just the right amount of iron. It does better if you do a controlled cooling as it is a crystalline glaze and needs the slow cool for the crystals to grow (fast cool will yield a chocolate brown gloss).You have to do a line blend on this one to get it right as iron oxides are never the same. I use Spanish red iron oxide. Generally increments of 1% RIO will be fine. But, you really need to do the line blend to get the best red and to fully appreciate the range of colors in that small range of RIO additions. From Bill Buckner bbuckner@sodaglaze.com Variations -- rio 11-17%
Recipe: (Percent, Batch)
Custer feldspar 47.7 46.70 Kaolin 4.1 4.00 Bone ash 15.3 15.00 Lithium carbonate 4.1 4.00 Talc 17.2 16.90 Flint 11.6 11.40 ----- -------- Totals: 100.0 98.00
Also add:
Bentonite 2.0 2.00 Red iron oxide 11.7 11.50
Comments:
From Glazes Cone 6 by Michael Bailey p. 89
Recipe: (Percent, Batch)
Potash feldspar 40.0 40.00 Zinc oxide 4.0 4.00 Dolomite 3.0 3.00 Whiting 15.0 15.00 Kaolin 5.0 5.00 Silica 33.0 33.00 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 4.0 4.00
Comments:
Shiny dark orange/brown Brian Kemp. Singapore - kempb@nievax.nie.ac.sg tested on white stoneware CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Soda feldspar 45.5 45.45 Silica 33.3 33.33 Whiting 4.0 4.04 Talc 7.1 7.07 Kaolin 5.1 5.05 Soda ash 5.1 5.05 ----- -------- Totals: 100.0 99.99
Also add:
Tin oxide 10.1 10.10
Comments:
omments: Nice shino white breaking to orange. From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Nepheline syenite 55.3 55.33 Gerstley borate 12.6 12.61 Whiting 10.7 10.71 Silica 21.4 21.35 ----- -------- Totals: 100.0 100.00
Also add:
Copper Oxide 0.4 0.39 Tin oxide 1.0 0.99
Comments:
kiln type: gas green in oxidation, red in reduction submitted by: John Anthony e-mail: JTRAX@AOL.COM
Recipe: (Percent, Batch)
Flint 32.7 32.70 Whiting 19.7 19.70 EPK 12.1 12.10 Zinc oxide 6.6 6.60 Magnesium carbonate 2.7 2.70 K-200 feldspar 26.3 26.30 ----- -------- Totals: 100.0 100.10
Also add:
Rutile 10.0 10.00
Comments:
Glossy pearly white to orange with yellow highlights where thick. Best when applied thickly. Be careful it might run some. Steve Williams sawilliams@skybest.com ------------------------------
Recipe: (Percent, Batch)
Gerstley borate 46.1 46.08 Kaolin 22.6 22.55 Silica 29.4 29.41 Soda ash 2.0 1.96 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 9.8 9.80
Comments:
An even better electric kiln glaze at cone 6 for refiring at cone 06 yto to get a rich red. fire at cone 6 and do nothing but take it out of the kiln and look disappointed and then put in and refire at cone 06. Next direction, take out and enthuse over change and improvement. Hope this is of interest. Lana Wilson lana@chem.ucsd.edu
Recipe: (Percent, Batch)
Nepheline syenite 40.2 40.17 Gerstley borate 24.4 24.35 Silica 17.7 17.74 EPK 17.7 17.74 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 0.9 0.87
Comments:
a clear, satin glaze. You may need to adjust the silica up a bit to prevent crazing, depending on your clay. source of original recipe: James Chappell's Complete Compendium of Clays and Glazes for the Potter submitted by: Sumi Dick e-mail: Sumi@AOL.COM
Recipe: (Percent, Batch)
Gerstley borate 21.0 21.00 Nepheline syenite 16.0 16.00 Kaolin 11.0 11.00 Whiting 20.0 20.00 Silica 32.0 32.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 5.0 5.00 Chromium oxide 0.2 0.15
Comments:
Brian Kemp. Singapore kempb@nievax.nie.ac.sg
Recipe: (Percent, Batch)
Ferro frit 3134 20.6 20.59 Kaolin 22.8 22.79 Silica 42.7 42.65 Whiting 14.0 13.97 ----- -------- Totals: 100.0 100.00
Comments:
submitted by: Michelle Campbell e-mail: Lackacreek@ccinetabca
Recipe: (Percent, Batch)
Nepheline syenite 43.3 43.30 Whiting 20.0 20.00 Lithium carbonate 16.7 16.70 Barium carbonate 5.0 5.00 Gerstley borate 8.3 8.30 Silica 6.7 6.70 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 8.3 8.30 chrome oxide 0.4 0.40
Comments:
Semi matt mauve, nice. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 28.2 140.90 Whiting 18.2 90.90 Talc 9.1 45.50 Kaolin 26.4 131.80 Silica 9.1 45.50 Zinc oxide 9.1 45.50 ----- -------- Totals: 100.0 500.10
Also add:
Tin oxide 4.6 22.80 Chrome oxide 1.8 9.10
Comments:
> ClayArt Listserv recipe < If you find this glaze useful, please consider submitting it to the GlazeBase project with full documentation. Use one of the GlazeBase submission formats available on the CeramicsWeb web page. comments: Semi matt, Pale pink, good From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Potash feldspar 28.2 28.20 Whiting 18.2 18.20 Talc 9.1 9.10 Kaolin 26.4 26.40 Silica 9.1 9.10 Zinc oxide 9.1 9.10 ----- -------- Totals: 100.0 100.10
Also add:
Tin oxide 4.6 4.60 chrome oxide 1.8 1.80
Comments:
Semi matt, Pale pink, good From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Frit 140 48.0 48.00 Zinc oxide 24.0 24.00 Kaolin 28.0 28.00 ----- -------- Totals: 100.0 100.00
Also add:
Chrome oxide 2.0 2.00
Comments:
B & R Pearson, Clay Times Nov/Dec 05 p.51. NOt for food. Variations -- additions of .25% RIO make the glaze more orange. 1% RIO = terracotta
Recipe: (Percent, Batch)
Gerstley borate 21.0 21.00 Nepheline syenite 16.0 16.00 Kaolin 11.0 11.00 Whiting 20.0 20.00 Silica 32.0 32.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 5.0 5.00 Chrome oxide 0.2 0.15
Comments:
Excellent red/pink, purple/mauve where thick. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Lithium carbonate 3.1 3.12 Barium carbonate 41.7 41.67 Zinc oxide 12.5 12.50 Nepheline syenite 26.0 26.04 Silica 16.7 16.67 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 4.2 4.17 Nickel oxide 1.6 1.56
Comments:
Here's a neat plum glaze, rather misnamed 'Nickel Pink.' It's 6^ ox. and comes from Emanual Coopers recipe file. Was printed in Ceramic Review May/June/87. When it is applied rather thickly, it is a beautiful rich plum color, breaking on the edges to a leather brown. submitted by: Dan Taylor e-mail: dataylor@mlc.awinc.com
Recipe: (Percent, Batch)
Potash feldspar 28.2 28.18 Whiting 18.2 18.18 Talc 9.1 9.09 Kaolin 26.4 26.36 Silica 9.1 9.09 Zinc oxide 9.1 9.09 ----- -------- Totals: 100.0 99.99
Also add:
Tin oxide 4.6 4.55 Chrome oxide 1.8 1.82
Comments:
Semi matt, Pale pink, good From Brian Kemp, Singapore, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp Nanyang Technological University Block B, Room 216 469 Bukut Timah Rd. Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Kentucky OM #4 15.8 15.79 Ferro frit 3134 52.6 52.63 Whiting 5.3 5.26 Silica (300m) 26.3 26.32 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.1 2.11 Titanium dioxide 1.1 1.05
Comments:
(Mimi Obstler's Out of the Earth Into the Fire p147) Here's the recipe, fired to about cone 5.4 or 6.2 (depending on which cone you want to read). Or fired to 1200C at 50C/hr. I added 1% TiO2 which gives a nice blush of crystalline effects, without the yellowish orange you get from rutile. Where this glaze is thicker though and right together with the crystals/bubbles, there's a foamy texture inside the glaze. I can tell because I fire on stilts and when the stilts come off, a little circular crust of glass stays on the stilt pin and the interior of the glaze where the stilt pulled off the surface looks like froth. Foam. (P.S. is this behavior an indicator of a fit problem?) So the glaze goes onto greenware and gets put in the kiln on stilts. Fired. Tons of what I thought were crystals but maybe they really are bubbles, as revealed by the froth. The presence of some sharp-edged pinholes argues that my crystals are bubbles maybe. Conventional wisdom I: soak more or cool more slowly. Done that I: Goes up to temp at 60C/hr, soaks 25 minutes, cools at 150C/hr to 900, then at 60C/hr to 700. If it gets any slower than that, won't I be a laughing stock? Conventional wisdom II: try refiring to convince yourself that it needs to soak some more. Done that II: Refired a set of pieces. Foam is still there. Some of the sharp edged pinholes have closed up. I have used this same recipe with 8% rutile (lovely effect by the way if your rutile is finely enough ground). It doesn't exhibit the same problem as far as I can see. A few pinholes where quite thick but nothing like this. So. Is this because titanium actually makes a glaze more refractory? I'm kinda puzzled about calculating how to make something melt more smoothly. Especially since it already seems totally loaded up with melter, all that boron. Thanks for any pointers to enlightenment Jan Walker Cambridge MA USA jwalker@world.std.com
Recipe: (Percent, Batch)
Kentucky OM #4 15.8 15.80 Ferro frit 3134 52.6 52.60 Whiting 5.3 5.30 Silica (300m) 26.3 26.30 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00 Titanium dioxide 1.1 1.10
Comments:
(Mimi Obstler's Out of the Earth Into the Fire p147) Here's the recipe, fired to about cone 5.4 or 6.2 (depending on which cone you want to read). Where this glaze is thicker though and right together with the crystals/bubbles, there's a foamy texture inside the glaze. I can tell because I fire on stilts and when the stilts come off, a little circular crust of glass stays on the stilt pin and the interior of the glaze where the stilt pulled off the surface looks like froth. Foam. I have used this same recipe with 8% rutile (lovely effect by the way if your rutile is finely enough ground). It doesn't exhibit the same problem as far as I can see. A few pinholes where quite thick but nothing like this. So. Is this because titanium actually makes a glaze more refractory? Jan Walker Cambridge MA USA jwalker@world.std.com
Recipe: (Percent, Batch)
Lithium carbonate 1.0 1.00 Strontium carbonate 20.0 20.00 Nepheline syenite 60.0 60.00 Ball clay 10.0 10.00 Silica 9.0 9.00 ----- -------- Totals: 100.0 100.00
Comments:
White add Titanium Dioxide 5%. Weathered Bronze Green add Titanium Dioxide 5% and Copper Carbonate 5%. Periwinkle Blue add Cobalt Carbonate .15% and Copper Carbonate 4%. Dark Mottled Green add Copper Carbonate 8%. Cream/Tan add Rutile 6%. Charcoal add Manganese Dioxide 2% and Copper Carbonate 5%. I have found several yellow ^ 6 glazes you might be interested in. The Pinnell Strontium matt was still very matt with 5% added G. Borate (maybe needs even more) The glaze must be thickly applied. It breaks to darker gold and white with 6% mason stain 6485/ titanium yellow. submitted by: Mary Kuilema e-mail: kuil@k2.iserv.net
Recipe: (Percent, Batch)
Nepheline syenite 50.7 50.60 Gerstley borate 8.8 8.80 EPK 4.6 4.60 Whiting 22.1 22.10 Flint 13.8 13.80 ----- -------- Totals: 100.0 99.90
Also add:
Bentonite 0.9 0.90 Tin oxide 8.3 8.30 Potassium bichromate 0.9 0.90
Comments:
Andy Lubow andrew s lubow
Recipe: (Percent, Batch)
neph sy 50.6 50.64 Gerstley borate 8.8 8.84 EPK 4.6 4.61 Whiting 22.1 22.10 Flint 13.8 13.81 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 0.9 0.92 Tin oxide 8.3 8.28 Potassium dichromate 0.9 0.92
Comments:
They use this glaze a lot at a community college I go to. I'm curious if anyone can tell me if it's safe used for a food container? Andy Lubow andrew s lubow
Recipe: (Percent, Batch)
Frit 3134 25.4 25.40 Nepheline syenite 8.0 8.00 Wollastonite 19.6 19.60 EPK 22.5 22.50 Flint 24.5 24.50 ----- -------- Totals: 100.0 100.00
Comments:
Chemical Analysis Na2O 0.18 Al2O3 0.35 SiO2 3.26 K2O 0.01 B2O3 0.27 MgO 0.02 CaO 0.79 Alumina:Silica ratio is 1.00 : 9.41 Neutral:Acid ratio is 1.00 : 5.30 Alkali:Neutral:Acid ratio is 1.00 : 0.62 : 3.26 Expansion coefficient: 68.0 x 10e-7 per degree C Oxides causing abnormal expansion effects: B2O3 The question that I have for Ron is about the expansion of the glazes listed below. A while back you told me that the expansion for the PMSP-4 glaze was a little low. You sent me a revised version which had a slightly higher expansion. I then looked at Tony Hansen's 5-20 glaze and found it to be pretty close to my PMSP-4. What range do you think the expansion should be in for a cone 6 oxidation glaze? PMSP-4 Expansion coefficient: 68.0 x 10e-7 per degree C Ron Roy's version of PMSP-4 Expansion coefficient: 71.1 x 10e-7 per degree C Tony Hansen's 5-20's glaze Expansion coefficient: 69.2 x 10e-7 per degree C In terms of my experience firing these glazes, I have found the PMSP to be water clear. Your revision to be mostly clear with bubbles only in areas of relief where the glaze has pooled. The 5-20's glaze for me was cloudy. I'm wondering if Ron Wright is getting more bubbles because he is trying to get a THICK clear? My clear gets a 4 second dip and I can't find any bubbles in it under a 1.5x magnifying glass. For anyone following this thread, all of the above glazes are given below. All are cone 6 oxidation. My firing takes about 8-9 hours to bend a large cone 6 and then I soak the kiln for another half hour to hour until cone 7 is at 2 o'clock. I then turn all of the switches to medium for 3 hours before shutting it off. The correct formula for Post's PMSP-4 is this one. The one posted on the database is incorrect. John Post jp6mchp@moa.net Sterling Heights, Michigan
Recipe: (Percent, Batch)
Potash feldspar 37.0 37.00 Gerstley borate 12.0 12.00 Dolomite 6.0 6.00 Talc 14.0 14.00 Kaolin 5.0 5.00 Silica 23.0 23.00 Zinc oxide 3.0 3.00 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt carbonate 2.0 2.00
Comments:
Brian Kemp. Singapore kempb@nievax.nie.ac.sg
Recipe: (Percent, Batch)
Whiting 17.0 17.00 Custer feldspar 35.0 35.00 Ball clay 12.0 12.00 Silica 19.0 19.00 Talc theoretical 5.0 5.00 Magnesium carbonate 2.0 2.00 Gerstley borate 10.0 10.00 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt carbonate 4.0 4.00
Comments:
From George Bowes and Matt Nolen.
Recipe: (Percent, Batch)
Kona F-4 feldspar 37.0 37.00 EPK 9.0 9.00 Whiting 9.0 9.00 Talc theoretical 18.0 18.00 Silica 19.0 19.00 Lithium carbonate 8.0 8.00 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 0.6 0.60 Cobalt oxide 2.0 2.00 Bentonite 2.0 2.00
Comments:
From Clay Times Sept/Oct 08. By Sylvia Hyman
Recipe: (Percent, Batch)
Soda feldspar 43.5 43.50 Flint 14.5 14.50 Talc 12.1 12.10 Gerstley borate 12.3 12.30 Dolomite 8.6 8.60 EPK 4.3 4.30 Manganese carbonate 4.8 4.80 ----- -------- Totals: 100.0 100.10
Also add:
Bentonite 1.0 1.00 Cobalt carbonate 1.9 1.90
Comments:
This is a semi gloss eggplant purple glaze given to me by a nice person I met at a glaze workshop: I particularly like it on the warm brown clay that I normally use. from jeanne ormsby
Recipe: (Percent, Batch)
Gerstley borate 3.0 3.00 Magnesium carb 3.0 3.00 Whiting 22.0 22.00 Nepheline syenite 23.0 23.00 Kaolin 20.0 20.00 Flint 29.0 29.00 ----- -------- Totals: 100.0 100.00
Comments:
From Elyse Burja. Based on Dixon Satin. Variations -- Chartreuse: 8% Drakenfield yellow (bright yellow stain) + 0.5% copper carb Deep Plum: + 10% Standard Ceramics Orchid stain Deep Purple-blue: + 8% Royal purple (Standard Ceramics).
Recipe: (Percent, Batch)
Custer feldspar 36.6 34.00 Gerstley borate 19.4 18.00 OM#4 Ball clay 11.8 11.00 Talc 15.1 14.00 Flint 10.8 10.00 Dolomite 6.5 6.00 ----- -------- Totals: 100.0 93.00
Also add:
Zircopax 10.8 10.00 Cobalt oxide 3.2 3.00
Comments:
This is a very reliable glaze. The surface is very smooth to the touch. It would be a good glaze for color variations. We have done a small amount of testing with mason stain additions and it seems to respond well to most colors, particularly the yellow. *How long have you been using this glaze? In a college studio setting for about a year. *Where is it used? Anne Arundel Community College *Where did this recipe come from? I have two versions of this glaze. This is the best and I am not sure if it came from the Penland Pottery book or not. I don't know the source of the other one. *What do you like most about this glaze? The reliability and the feel. *Is this glaze reliable? Yes, very. *Does this glaze tend to craze/crawl/pinhole/etc.? We have had some crawling when it is applied thickly or overlapped heavily with other glazes. Controlling the thickness is essential. *How do different firing temperatures/atmospheres affect the glaze? It seems to stand up well to temperature variations. When it is hotter it will tend to go more translucent. *How does the glaze behave on different clay bodies? The color is pretty powerful. Over a stoneware body in reduction it will go a bit darker, and it will be brighter and bluer over a white body. *What consistency should the glaze be for pouring/dipping? A cream consistency, so that you can see the cutile of your fingers when a hand is dipped in the glaze. *How thickly should the glaze be applied to the pot? Medium, a full 3 second dip is adequate. *How does this glaze interact with other glazes? It breaks up nicely and goes to a navy blue when used with our clear glaze. *What is your kiln type and size? Most of our work with it has been in an Alpine 20 natural gas kiln. We have also used it in a 23" dia. L&L econo kiln. The colors in oxidation are a bit lighter, and the surface is not as smooth. *How do you typically fire? The gas schedule is just 7.5 to 8 hours to reach cone 6. We fire between cone 6 and 7. Reduction starts at cone 010, and continues to cone 6, with the dampers being opened gradually as the firing gets closer to completion, but we maintain reduction to the end. No soak. We close the dampers but don't close the burner ports. We open the kiln 36 hours later. It is usually still pretty warm a the top. *What is your water pH? very close to 7 *GlazeBase Glaze* Submitted by: Rick Malmgren (RMalmgren@juno.com) Ice Cream Flavor: Bryer's Mint Chocolate Chip -------------------------------------------------------------------- ----
Recipe: (Percent, Batch)
Nepheline syenite 18.0 18.00 Frit 3134 14.0 14.00 Whiting 20.0 20.00 Kentucky OM #4 18.0 18.00 Silica 30.0 30.00 ----- -------- Totals: 100.0 100.00
Also add:
Chrome oxide 0.2 0.20 Tin oxide 3.8 3.75 Cobalt carbonate 0.6 0.60
Comments:
Clay Times Jan/Feb 05 p.55. Based on Raspberry Red by John Hesselberth & Ron Roy, w/change in tin + cobalt
Recipe: (Percent, Batch)
Gerstley borate 3.0 3.00 Magnesium carbonate 3.0 3.00 Whiting 22.0 22.00 Nepheline syenite 23.0 23.00 Kaolin 20.0 20.00 Flint 29.0 29.00 ----- -------- Totals: 100.0 100.00
Comments:
From Elyse Burja Variations -- Chartreuse: 8% Drakenfield yellow (bright yellow stain) + 0.5% copper carb Deep Plum: + 10% Standard Ceramics Orchid stain Deep Purple-blue: + 8% Royal purple (Standard Ceramics).
Recipe: (Percent, Batch)
Dolomite 6.6 6.60 Whiting 19.1 19.10 Nepheline syenite 23.0 23.00 Kaolin - theoretical 16.7 16.70 Silica 28.8 28.80 Frit 3195 5.7 5.70 ----- -------- Totals: 100.0 99.90
Comments:
From Elyse Burja Variations -- Chartreuse: 8% Drakenfield yellow (bright yellow stain) + 0.5% copper carb Deep Plum: + 10% Standard Ceramics Orchid stain Deep Purple-blue: + 8% Royal purple (Standard Ceramics).
Recipe: (Percent, Batch)
Strontium carbonate 25.0 25.00 Barium carbonate 15.0 15.00 Zinc oxide 18.0 18.00 Kaolin 25.0 25.00 Flint 17.0 17.00 ----- -------- Totals: 100.0 100.00
Also add:
Macaloid 1.0 1.00 Nickel carbonate 1.5 1.50
Comments:
Clay Times Nov/Dec. 05 p.53 from B & R Pearson. NOT for food. Best purples are w/white slip on body. Glaze application toward thick. Rapid firing cycle (6 hours). Significantly longer cycle makes glaze run, become glassy, and change toward blue. Variations -- + 4% cobalt added to purple glaze = royal blue. Fire to cone 6 to avoid excessive matt surface.
Recipe: (Percent, Batch)
Albany slip 75.0 375.00 Cornwall Stone 25.0 125.00 ----- -------- Totals: 100.0 500.00
Also add:
Red iron oxide 25.0 125.00
Comments:
> ClayArt Listserv recipe < If you find this glaze useful, please consider submitting it to the GlazeBase project with full documentation. Use one of the GlazeBase submission formats available on the CeramicsWeb web page. comments: Rob Wadey (robert wadey) 9734B - 100 Ave Grande Prairie, Alberta t8V 0T6 Phone: (403) 538-3731 Fax: (403) 538.3732
Recipe: (Percent, Batch)
Kentucky OM #4 20.0 20.00 Kona F-4 50.0 50.00 Gerstley borate 5.0 5.00 Zinc oxide 5.0 5.00 Whiting 15.0 15.00 Flint 5.0 5.00 ----- -------- Totals: 100.0 100.00
Comments:
Zinc content will make this glaze brown with chrome colorants. Mottled, smooth surface. Variations -- Grey: 2% black nickle oxide + 1% CoO Green: 2% black nickle oxide + 4% rutile
Recipe: (Percent, Batch)
Kentucky OM #4 20.0 20.00 Kona F-4 50.0 50.00 Gerstley borate 5.0 5.00 Zinc oxide 5.0 5.00 Whiting 15.0 15.00 Flint 5.0 5.00 ----- -------- Totals: 100.0 100.00
Comments:
Zinc content will make this glaze brown with chrome colorants. Mottled, smooth surface. Some colors above from Shannon Nelson. Variations -- Grey: 2% black nickle oxide + 1% CoO Green: 2% black nickle oxide + 4% rutile Dusty Lavender: 5 deep crimson MS, 5 salmon MS, 0.2 Cobalt carb Deep purple: leave out zn, add 5 Gerst B + 10-20 Blackberry wine mason stain golden yellow: 5 golden ambrosia MS + 5 Drakenfeld yellow yellow stain (Pr)
Recipe: (Percent, Batch)
Kaolin 14.3 14.20 Nepheline syenite 31.9 31.80 Whiting 15.7 15.60 Zinc oxide 5.1 5.10 Flint 18.7 18.60 Frit 3124 14.4 14.30 ----- -------- Totals: 100.0 99.60
Also add:
Bentonite 1.0 1.00
Comments:
Tested by Valerie Duncan. Nice satin surface, but crazed on her clay body. Zinc content will make this glaze brown with chrome colorants. Mottled, smooth surface. Some colors above from Shannon Nelson. Variations -- Grey: 2% black nickle oxide + 1% CoO Green: 2% black nickle oxide + 4% rutile Dusty Lavender: 5 deep crimson MS, 5 salmon MS, 0.2 Cobalt carb Deep purple: leave out zn, add 5 Gerst B + 10-20 Blackberry wine mason stain golden yellow: 5 golden ambrosia MS + 5 Drakenfeld yellow yellow stain (Pr)
Recipe: (Percent, Batch)
Whiting 20.0 20.00 Nepheline syenite 18.0 18.00 Frit 3134 14.0 14.00 Kentucky OM #4 18.0 18.00 Silica 30.0 30.00 ----- -------- Totals: 100.0 100.00
Also add:
Chromium oxide 0.2 0.20 Tin oxide 7.5 7.50
Comments:
Chrome-tin pink. p.102 Mastering Cone 6 Glazes by John Hesselberth & Ron Roy. Glaze has highest expansion/contraction of any of their glazes - almost medium expansion. Not seen to craze in their examples, but may over time. Variations -- deep purple +1% CoCO3 and 0.25 RIO Cranberry: tin oxide 3.8% + 0.2 chrome oxide
Recipe: (Percent, Batch)
Gerstley borate 21.0 21.00 Nepheline syenite 16.0 16.00 EPK 11.0 11.00 Whiting 20.0 20.00 Silica 32.0 32.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 5.0 5.00 Chromium oxide 0.2 0.15
Comments:
From George Bowes. Deep, rich cranberry red.
Recipe: (Percent, Batch)
Talc theoretical 3.2 3.20 Whiting 13.7 13.70 Frit 3134 12.7 12.70 Kona F-4 feldspar 44.3 44.30 EPK 6.1 6.10 Flint 15.8 15.80 Zinc oxide 4.2 4.20 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 2.1 2.10 Copper oxide 1.1 1.10
Comments:
Copper red in reduction, celadon blue-green in oxidation. From Rick Malmgren in CM. Variations -- Shown in CM 11/2012 w/ 0.25% chrome.
Recipe: (Percent, Batch)
EPK 5.9 5.90 Flint 29.4 29.40 Custer feldspar 19.6 19.60 Talc 13.7 13.70 Gerstley borate 31.4 31.40 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 14.7 14.70
Comments:
Here's one I tested that I liked a great deal. Shiny Red mottled foreground. Background variations of light to medium Tans/Browns. Beautiful Glaze andrew lubow
Recipe: (Percent, Batch)
EPK 5.0 5.00 Silica, (325 mesh) 29.7 29.70 Custer feldspar 19.8 19.80 Talc theoretical 13.9 13.90 Gerstley borate 31.7 31.70 ----- -------- Totals: 100.0 100.10
Also add:
Red iron oxide 14.9 14.90
Comments:
ketchup red, more like the ketchup red from the time we had an abundance of ripe tomatoes and overcooked a batch of ketchup. However, it had a frosting of tan and the plate and bowl are great looking. The glaze tended to flake off when dry and required careful handling on non-grolleg ^6 porcelain (Standard Ceramics # 213). Has satin finish. Bonnie Hellman e-mail: mou10man@sgi.net This glaze is identical to Randy's Red.
Recipe: (Percent, Batch)
Gerstley borate 21.0 21.00 Nepheline syenite 16.0 16.00 EPK 11.0 11.00 Whiting 20.0 20.00 Silica 32.0 32.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 5.0 5.00 Chrome Oxide 5.0 5.00
Comments:
One thing I will say is the 'Red pink to Purple Mauve' turned out great. It is more of a deep red-violet. I did not find it purple when applied thick but happy with it as it is. I'll mess with it and keep trying. This was fired in elect on dillo white clay. submitted by: Lori Wilkinson e-mail: lorwilk@lookingglass.net
Recipe: (Percent, Batch)
Silica 29.7 29.70 EPK 5.0 5.00 Soda feldspar 19.8 19.80 Talc theoretical 13.9 13.90 Gerstley borate 31.7 31.70 ----- -------- Totals: 100.0 100.10
Also add:
Bentonite 2.0 2.00 Red iron oxide 15.0 15.00
Comments:
comments: A very nice base comes from Randy's Red with the iron omitted. You can add up to 10% zircopax or other whitener, I would suggest 5% for starters. Works good with other colorants also. Cobalt carbonate will give a purple. Very Stable! Rose Downs submitted by: dianna rose downsClay Times Variations -- Darker red: instead of 15 RIO add: 7.5 Crocus Martis 7.5 RIO
Recipe: (Percent, Batch)
Soda feldspar 52.0 52.00 Flint 18.0 18.00 Gerstley borate 10.0 10.00 Whiting 15.0 15.00 China clay 5.0 5.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 1.0 1.00 Silicon carbide 0.5 0.50 Copper carbonate 0.5 0.50
Comments:
Can use a calcium borate frit instead of gerstley borate (try Ferro frit 3124). (fine SiC) In the book Glazes by Emmanuel Cooper (in the Complete Potter series), Mr. Cooper states: In electric kilns reduction be achieved in the glaze by the addition of small amounts of silicon carbide. A powerful flux such as calcium borate frit or borax frit is needed to break down the silicon carbide while the glaze also needs to be sufficiently fluid to allow the gas formed to be released if a smooth surface is required. I have not personally tried this. Have fun whomever wants to.... Anne Worner
Recipe: (Percent, Batch)
Bone ash 4.0 4.00 Talc theoretical 4.0 4.00 Whiting 20.0 20.00 Custer feldspar 50.0 50.00 Frit 3110 4.0 4.00 EPK 18.0 18.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 4.0 4.00 Black iron oxide 5.0 5.00
Comments:
Cone 6 version of Shaner's Red. Senisitive to thickness, reduction, and clay body. NOTE: slow cooling is important because the color comes from iron crystals forming during cooling. Probably works in oxidation as well.
Recipe: (Percent, Batch)
Gerstley borate 21.0 21.00 Nepheline syenite 16.0 16.00 Kaolin 11.0 11.00 Whiting 20.0 20.00 Silica 32.0 32.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 5.0 5.00 Chromium oxide 0.2 0.15
Comments:
From Matt Nolen. Maroon opaque shiny.
Recipe: (Percent, Batch)
Cornwall Stone 80.8 80.90 Whiting 10.6 10.60 Gerstley borate 3.6 3.60 Lithium carbonate 5.0 5.00 ----- -------- Totals: 100.0 100.10
Also add:
Red iron oxide 10.0 10.00
Comments:
(Richmond Potters' Club standard, unknown origin) (a rich glossy very dark brown with a lot of life and aventurine possibilities where thick. This is a good base glaze. The RIO can be replaced with cobalt, copper, tin, etc. for other colours, useful for overdipping or whatever.) Veronica Shelford e-mail: shelford@island.net s-mail: P.O. Box 6-15 Thetis Island, BC V0R 2Y0 Tel: (250) 246-1509
Recipe: (Percent, Batch)
Nepheline syenite 50.0 50.00 Silica 22.7 22.70 Kaolin 9.1 9.10 Dolomite 9.1 9.10 Bone ash 9.1 9.10 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 9.1 9.10 Bentonite 1.8 1.80
Comments:
Brian Kemp. Singapore kempb@nievax.nie.ac.sg
Recipe: (Percent, Batch)
Custer feldspar 16.3 16.00 Talc theoretical 14.3 14.00 Gerstley borate 31.6 31.00 Bone ash 2.0 2.00 EPK 5.1 5.00 Silica 30.6 30.00 ----- -------- Totals: 100.0 98.00
Also add:
Red iron oxide 15.3 15.00
Comments:
I've spent the last 3 years working on cone 5 iron red glazes, starting with Randy's Red, and I've found some things that work to make it redder. I started by taking each ingredient, cutting it down, and gradually adding it back till I had double the amount in the recipe. I found some adjustments that work. Then I researched adding other ingredients in various amounts, and found a couple that seem to help. My new recipe I call Towy Red, after my dog. He's a Welsh Springer Spaniel, and has spots this color. He's named after the River Towy in Wales (rhymes with Howie). Then I tried different irons. I tried black iron, yellow iron, and 5 different reds, including Spanish Red. I found that the redder it was before it was fired, the redder it would be after. The best I have found so far has been an iron from Pfizer that is bright red-orange raw. I'm almost out, and don't know where to get more. Any suggestions? The Spanish Red I got from a local supplier, and it's earthy red-brown. To get the red, you need a lot of calcium, and almost as much, but not more, magnesium. All of these iron reds have a very high silica/ alumina ratio, at least 20 to 1, some as high as 100 to 1. Of course they run like the Energizer Bunny, but I only use them on tile. submitted by: Paul Lewing e-mail: PJLewing@aol.com
Recipe: (Percent, Batch)
Gerstley borate 8.0 8.00 Talc theoretical 4.0 4.00 Whiting 21.0 21.00 Frit 3134 9.0 9.00 Custer feldspar 31.0 31.00 EPK 9.0 9.00 Silica 18.0 18.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 5.0 5.00 Chromium oxide 0.2 0.20
Comments:
From CM 11/2012. Thinner application recommended, as thick may be greyer. Variations -- Adding 0.25 cobalt carb can push toward red-violet.
Recipe: (Percent, Batch)
Custer feldspar 32.3 30.00 Nepheline syenite 32.3 30.00 Whiting 21.5 20.00 Talc 4.3 4.00 Kaolin 9.7 9.00 ----- -------- Totals: 100.0 93.00
Comments:
Variations -- Red = bone ash 6 + iron 4 Gold= rutile 4
Recipe: (Percent, Batch)
Nepheline syenite 46.3 46.33 Silica 19.8 19.80 Gerstley borate 13.6 13.56 Whiting 8.2 8.21 Dolomite 5.9 5.94 Zinc oxide 3.7 3.68 EPK 2.5 2.48 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 1.0 0.98 Tin oxide 1.0 0.98 Rutile 0.5 0.49
Comments:
has a tendency to run in reduction. in oxidation at cone 6 a transparent green that crackles. In reduction at cone 6 will turn blood red if heavily reduced. In reduction at cone 10 it works best, a beautiful purple. submitted by: J.D. e-mail: CLAYJUNKIE@AOL.COM
Recipe: (Percent, Batch)
Frit 3134 21.0 21.00 Nepheline syenite 19.0 19.00 Wollastonite 20.0 20.00 EPK 16.0 16.00 Flint 24.0 24.00 ----- -------- Totals: 100.0 100.00
Comments:
Chemical Analysis Na2O 0.21 Al2O3 0.34 SiO2 3.28 K2O 0.03 B2O3 0.22 MgO 0.02 CaO 0.74 Alumina:Silica ratio is 1.00 : 9.61 Neutral:Acid ratio is 1.00 : 5.85 Alkali:Neutral:Acid ratio is 1.00 : 0.56 : 3.28 Expansion coefficient: 71.1 x 10e-7 per degree C Oxides causing abnormal expansion effects: B2O3 John Post jp6mchp@moa.net Sterling Heights, Michigan
Recipe: (Percent, Batch)
Lithium carbonate 10.5 10.50 Bone ash 10.5 10.50 Nepheline syenite 61.5 61.50 #6 Tile clay 17.5 17.50 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 10.0 10.00
Comments:
fired to ^ 6 Ox (^ 7 in sitter.)Very nice matt, light tan/yellow with orange specks. From Gibby and Dave Gibson Rafael Molina-Rodriguez
Recipe: (Percent, Batch)
Custer feldspar 24.8 27.00 Gerstley borate 19.3 21.00 Dolomite 8.1 8.80 Talc theoretical 17.9 19.50 Kentucky OM #4 6.9 7.50 Silica 23.1 25.20 ----- -------- Totals: 100.0 109.00
Also add:
Cobalt carbonate 2.8 3.00
Comments:
Recipe: (Percent, Batch)
Custer feldspar 24.0 24.00 Kona F-4 feldspar 19.0 19.00 Wollastonite 14.0 14.00 Talc 11.0 11.00 OM-4 ball clay 12.0 12.00 Flint, fine mesh 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
use OM-4 Ball clay or equal (eg, Bell Dark) use Custer feldspar (or equal, eg, G-200 f.s.) Recently, a glaze recipe for satin black was posted here with a request for revision to C6 brown in oxidation. Here is such a recipe. C6 Base Glaze, oxidation or reduction Add 2-5% iron oxide red for browns; 1-2% Cobalt carbonate for blues; 2-4% Copper carbonate for greens. Try other colourants for variation. On some bodies, the glaze may require a 30-minute soaking. The Seger formula for the revision above is: CaO 0.51; MgO 0.24; KNaO 0.25; Al2O3 0.40; SiO2 4.10 which places the glaze in the middle of the 3-7 cone range. The glaze will be glossy Ratio = 10.3 and it should fit most stoneware bodies, perhaps even some porcelaineous stonewares since the Expansion coefficient is 6.6x10-6. The original glaze as cited was relying on the high level of colourant oxides to help bring it closer to balance but it would be overfired at C9 (if the body fails to release silica to the glaze). Tom Buck Hamilton ON Canada URL http://digitalfire.com/magic/tombuck.htm
Recipe: (Percent, Batch)
Custer feldspar 24.0 24.00 Kona F-4 feldspar 19.0 19.00 Wollastonite 14.0 14.00 Talc 11.0 11.00 OM-4 ball clay 12.0 12.00 Flint, fine mesh 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
use OM-4 Ball clay or equal (eg, Bell Dark) use Custer feldspar (or equal, eg, G-200 f.s.) Recently, a glaze recipe for satin black was posted here with a request for revision to C6 brown in oxidation. Here is such a recipe. C6 Base Glaze, oxidation or reduction Add 2-5% iron oxide red for browns; 1-2% Cobalt carbonate for blues; 2-4% Copper carbonate for greens. Try other colourants for variation. On some bodies, the glaze may require a 30-minute soaking. The Seger formula for the revision above is: CaO 0.51; MgO 0.24; KNaO 0.25; Al2O3 0.40; SiO2 4.10 which places the glaze in the middle of the 3-7 cone range. The glaze will be glossy Ratio = 10.3 and it should fit most stoneware bodies, perhaps even some porcelaineous stonewares since the Expansion coefficient is 6.6x10-6. The original glaze as cited was relying on the high level of colourant oxides to help bring it closer to balance but it would be overfired at C9 (if the body fails to release silica to the glaze). Tom Buck Hamilton ON Canada URL http://digitalfire.com/magic/tombuck.htm
Recipe: (Percent, Batch)
Nepheline syenite 34.1 34.10 EPK 1.8 1.80 Gerstley borate 16.3 16.30 Silica 31.8 31.80 Whiting 3.9 3.90 Zinc oxide 6.1 6.10 Barium carbonate 5.9 5.90 ----- -------- Totals: 100.0 99.90
Also add:
Bentonite 2.0 2.00
Comments:
I have never ommitted Barium in this ^4-^8 oxidation glaze actually i have not used the glaze in years. But it is a great oxidation glaze and I considered using it next year at the school where I teach. However, the barium scared me. IF barium Carb can not be ommited is there a safe substitute? submitted by: Charles Gareri e-mail: cgareri@ideanet.doe.state.in.us
Recipe: (Percent, Batch)
G-200 feldspar 24.1 24.07 Gerstley borate 14.8 14.81 Silica 24.1 24.07 EPK 20.4 20.37 Dolomite 16.7 16.67 ----- -------- Totals: 100.0 99.99
Also add:
Cobalt carbonate 2.5 2.50 Black iron oxide 13.9 13.89
Comments:
Here is my black cone 6 ox formula. This glaze is more satin than matt, however, additions of epk should give you what you want. The expansion number for this glaze is very low, but I think there is more chance of crazing than shivering. I don't know why but probably the high iron content increases the co-e of expansion. To increase matt 2-4 more parts of epk will probably do. I have tests using this base that look like old-fashion chalk boards. submitted by: Fraser Forsythe e-mail: forsythe@sentex.net
Recipe: (Percent, Batch)
Frit 3124 35.0 36.00 Wollastonite 26.2 27.00 EPK 34.0 35.00 Silica 4.9 5.00 ----- -------- Totals: 100.0 103.00
Comments:
Nice satin with small specks of clear crystals. From Kyla Toomey.
Recipe: (Percent, Batch)
Nepheline syenite 60.0 60.00 Strontium carbonate 20.0 20.00 Kentucky OM #4 10.0 10.00 Silica 9.0 9.00 Lithium carbonate 1.0 1.00 ----- -------- Totals: 100.0 100.00
Comments:
From Highwater Clays catalog. Variations -- + stain 2-12 %
Recipe: (Percent, Batch)
Gerstley borate 2.9 2.90 Magnesium carb 2.9 2.90 Whiting 22.4 22.40 Nepheline syenite 22.7 22.70 Kaolin 20.3 20.30 Flint 28.8 28.80 ----- -------- Totals: 100.0 100.00
Comments:
From George Bowes. Good for stains/oxides. Great for purples and pinks. % of stain is important. Test. Apply 3 coats if brushing. To brush use CMC gum solution. Cloudy if fired below cone 5. Very stable glaze, good to paint on top of w/ stains & colorants. Crystalline surface is not good for food contact. Variations -- Use 50 frit 50 stain to decorate on top of raw glaze like majolica. To use this, use half water, half thick CMC gum solution for better brushing.
Recipe: (Percent, Batch)
Magnesium carbonate 2.9 2.90 Whiting 22.3 22.30 EPK 20.3 20.30 Nepheline syenite 22.6 22.60 Flint 20.0 20.00 Frit 3124 11.7 11.70 ----- -------- Totals: 100.0 99.80
Comments:
Dixon re-calculated to eliminate Gerstley Borate.
Recipe: (Percent, Batch)
Dolomite 6.1 6.00 Whiting 19.1 18.90 Calcined kaolin 8.1 8.00 Kaolin - theoretical 12.5 12.40 Custer feldspar 32.3 32.00 Silica 14.5 14.40 Frit 3134 7.5 7.40 ----- -------- Totals: 100.0 99.10
Comments:
Dixon re-calculated to eliminate Gerstley Borate. Revised again to reduce crawling. MgCO3 to dolomite. Some calcined kaolin used.
Recipe: (Percent, Batch)
Dolomite 7.4 7.40 Frit 3124 6.2 6.20 Whiting 18.3 18.30 Nepheline syenite 20.5 20.50 Kaolin 20.4 20.40 Flint 27.2 27.20 ----- -------- Totals: 100.0 100.00
Comments:
Recipe: (Percent, Batch)
Nepheline syenite 24.1 22.70 Whiting 23.8 22.40 EPK 21.5 20.30 Silica 21.2 20.00 Frit 3124 9.3 8.80 ----- -------- Totals: 100.0 94.20
Comments:
From George Bowes and Sandy Lance.
Recipe: (Percent, Batch)
Silica 20.0 20.00 Nepheline syenite 20.0 20.00 Whiting 20.0 20.00 EPK 20.0 20.00 Frit 3124 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00
Comments:
From Chandra DeBuse in Clay Times (Eric Mirabito). Add 4-7% Mason stain for color. Changes from satin to glass depending on cooling fast or slow.
Recipe: (Percent, Batch)
Frit 3124 10.0 10.00 Nepheline syenite 15.0 15.00 Kentucky OM #4 25.0 25.00 EPK 25.0 25.00 Silica 25.0 25.00 ----- -------- Totals: 100.0 100.00
Comments:
Slip has cobalt-free black 6 + frit 3289 19. This glaze over the slip will make a feathered edge and bleed the slip. Research by Lindsay Rogers.
Recipe: (Percent, Batch)
Frit 3134 10.9 12.50 Custer feldspar 31.9 36.50 EPK 21.9 25.00 Dolomite 12.5 14.30 Flint 1.3 1.50 Wollastonite 7.4 8.50 Talc 14.0 16.00 ----- -------- Totals: 100.0 114.30
Also add:
Tin oxide 2.6 3.00 Rutile 4.4 5.00
Comments:
Recipe: (Percent, Batch)
Gerstley borate 50.0 50.00 Clay 50.0 50.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Ca B AlMatt. Opacity: . Firing type: Ox or Red .
Recipe: (Percent, Batch)
Whiting 17.0 17.00 Frit 3124 40.0 40.00 Nepheline syenite 17.0 17.00 EPK 13.0 13.00 Silica 13.0 13.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00
Comments:
From Val Cushing
Recipe: (Percent, Batch)
Soda feldspar 47.0 47.00 Flint 15.0 15.00 Talc theoretical 14.0 14.00 Gerstley borate 12.0 12.00 Dolomite 8.0 8.00 Kaolin 4.0 4.00 ----- -------- Totals: 100.0 100.00
Comments:
Recipe: (Percent, Batch)
Frit 3134 8.5 8.50 Nepheline syenite 26.0 26.00 Spodumene 27.3 27.30 Strontium carbonate 15.5 15.50 Grolleg 14.3 14.30 Silica 7.0 7.00 Lithium carbonate 1.4 1.40 ----- -------- Totals: 100.0 100.00
Comments:
Variation on Pete Pinnell's Weathered Bronze w/o lithium. See Clay Times article p.19 Mar/Apr. 2004. More grey than black w/green. More satin-y than Green-Black Pete's.
Recipe: (Percent, Batch)
Gerstley borate 2.9 2.94 Magnesium carbonate 2.9 2.94 Whiting 22.4 22.35 Nepheline syenite 22.7 22.65 EPK 20.3 20.30 Flint 20.0 20.00 Frit 3124 8.8 8.82 ----- -------- Totals: 100.0 100.00
Comments:
Variations -- chartreuse = + 8 Drakenfeld of Mason Praes. yellow stain + 2 copper carb med. green = 8 Drakenfeld yellow stain + 4 copper pale green = 2 pras. yellow stain + 0.5 copper carb pale yellow = 1 Drak. yellow + 0.5 Turq. Mason stain
Recipe: (Percent, Batch)
Frit 3124 15.9 15.90 Nepheline syenite 23.7 23.70 Dolomite 8.2 8.20 Wollastonite 24.6 24.60 EPK 20.0 20.00 Flint 7.7 7.70 ----- -------- Totals: 100.0 100.10
Comments:
Re-calc from Pete Pinnell. Original glaze seemed to 'go bad' over time. Pete thought it might be the combo of GB, Mg Carb and EPK, as well as neph sy.
Recipe: (Percent, Batch)
Barium carbonate 36.6 36.60 Lithium carbonate 1.1 1.10 Nepheline syenite 45.6 45.60 Ball clay 7.2 7.20 Flint 9.5 9.50 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00
Comments:
Recipe: (Percent, Batch)
Kona F-4 feldspar 50.0 50.00 Barium carbonate 22.0 22.00 Frit 3185 8.0 8.00 Whiting 5.0 5.00 EPK 5.0 5.00 Flint 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Ba Ca Na B. Firing type: Ox or Red. From Val Cushing. VC ed
Recipe: (Percent, Batch)
Kona F-4 feldspar 60.2 60.20 Flint 5.8 5.80 Whiting 18.2 18.20 Zinc oxide 10.0 10.00 EPK 5.8 5.80 ----- -------- Totals: 100.0 100.00
Also add:
Opax 4.0 4.00
Comments:
From a University of Georgia class handout on glaze & clay from Andy Nasisse. A variation on L.A. Matt.
Recipe: (Percent, Batch)
Custer feldspar 40.0 40.00 Frit 3124 9.0 9.00 Whiting 16.0 16.00 Talc theoretical 9.0 9.00 EPK 10.0 10.00 Flint 16.0 16.00 ----- -------- Totals: 100.0 100.00
Comments:
From Cheyenne Rudolph. Smooth, slightly frosty satin/waxy.
Recipe: (Percent, Batch)
Dolomite 10.0 10.00 Whiting 13.3 13.30 Custer feldspar 36.5 36.50 EPK 23.5 23.50 Frit 3134 16.7 16.70 ----- -------- Totals: 100.0 100.00
Comments:
Developed by Valerie Duncan
Recipe: (Percent, Batch)
Custer feldspar 37.8 37.84 Dolomite 5.4 5.41 Whiting 4.9 4.86 Kaolin 8.7 8.65 Flint 13.0 12.97 Gerstley borate 18.4 18.38 Talc 11.9 11.89 ----- -------- Totals: 100.0 100.00
Also add:
Titanium dioxide 3.8 3.78 Zircopax 4.3 4.32
Comments:
(the club's standard oatmeal was too runny - my variation sits better and is a good base glaze. Surface waxy where thinnish, to glossy if thick. Underglaze painting shows through with softened edges. The titanium makes it reactive when over-dipped with some other glazes, and you may get areas of aventurine.) Here are a couple of standards from the Richmond Potters Club, and a few of my own formulation that have worked well in ^6 oxidation. They aren't revolutionary (my exciting ones have things like barium in them, or are less predictable for a classroom situation) but they have been reliable, and allow for some play. They all calculate out to well within the INSIGHT limit formulas for maturity at ^6. If anyone tests these and comes up with problems, new ideas, good variations etc. could they let me know? I'll look forward to a larger list being posted to clayart. Veronica Shelford e-mail: shelford@island.net s-mail: P.O. Box 6-15 Thetis Island, BC V0R 2Y0 Tel: (250) 246-1509
Recipe: (Percent, Batch)
Spodumene 30.0 30.00 Dolomite 24.0 24.00 Custer feldspar 21.0 21.00 Silica 12.0 12.00 Kaolin 9.0 9.00 Gerstley borate 4.0 4.00 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 5.0 5.00
Comments:
kiln type: gas Color depends upon the type of spodumene. submitted by: John Anthony e-mail: JTRAX@AOL.COM
Recipe: (Percent, Batch)
Dolomite 18.4 18.39 Spodumene 11.5 11.50 Nepheline syenite 51.7 51.71 Ball clay 13.8 13.80 Zinc oxide 4.6 4.60 ----- -------- Totals: 100.0 100.00
Also add:
Titanium dioxide 2.3 2.30
Comments:
Finely Textured Satin matt - Do not apply too thick as it will bubble. I substituted Rutile for Titanium Dioxide because I didn't have any and it worked fine. Just don't double dip unless glaze if very thin. I liked how this worked over texture. They are dependable firing to firing in Cone 6 electric on dark clay. From Jeff Dietrich in Ceramics Montly, April 1991 & sent via ClayArt by Phyllis Nelson Baldwin City, Kansas E-mail: NELSON@george.bakeru.edu
Recipe: (Percent, Batch)
Custer feldspar 36.0 36.00 Frit 3124 20.0 20.00 Talc theoretical 16.0 16.00 Wollastonite 8.0 8.00 EPK 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 5.0 5.00 Titanium oxide 3.0 3.00
Comments:
Nice semi-gloss finish w beautiful feel and great coverage. Pottery Making Illus. Nov./De. 2012 Variations -- add 3% rutile in place of titanium for a buttery hue.
Recipe: (Percent, Batch)
Cornwall Stone 40.0 3200.00 Frit 3124 9.0 720.00 Talc 9.0 720.00 Whiting 16.0 1280.00 EPK 10.0 800.00 Flint 16.0 1280.00 ----- -------- Totals: 100.0 8000.00
Comments:
Glaze Type: Ca Mg. Opacity: ?. Firing type: Ox or Red .
Recipe: (Percent, Batch)
Kona F-4 Feldspar 34.0 34.00 Nepheline syenite 17.0 17.00 Whiting 12.6 12.60 Barium carbonate 1.6 1.60 Zinc oxide 6.0 6.00 Gerstley borate 3.3 3.30 Dolomite 2.6 2.60 Talc 3.3 3.30 Kaolin 12.3 12.30 Silica 7.3 7.30 ----- -------- Totals: 100.0 100.00
Comments:
With 4% manganese and 0.5% Cobalt Carbonate a brown bronzey type of gun metal underneath. With 1.5% Copper Carbonate and 0.5% Cobalt Carbonate it is a blue green. With 1% copper carbonate and 6% rutile it is a terrific green with mottled yellow. This combination has been made a studio glaze and we have named it 'sea Foam' It is especially stunning on dark red clay bodies. submitted by: Debra Drencicki e-mail: DKREN@AOL.COM
Recipe: (Percent, Batch)
Frit 3134 9.1 9.00 F-4 spar 51.6 51.30 Strontium carbonate 25.7 25.50 Grolleg 13.7 13.60 ----- -------- Totals: 100.0 99.40
Also add:
Copper carbonate 5.0 5.00 Titanium dioxide 5.0 5.00
Comments:
Variation on Pete Pinnell's Weathered Bronze w/o lithium. See Clay Times article p.19 Mar/Apr. 2004. More of a satin-matt. Breaks white/light green. A better-behaved raw glaze w/o lithium.
Recipe: (Percent, Batch)
Albany Slip 60.0 60.00 Nepheline syenite 40.0 40.00 ----- -------- Totals: 100.0 100.00
Comments:
Rob Wadey (robert wadey ) 9734B - 100 Ave Grande Prairie, Alberta t8V 0T6 Phone: (403) 538-3731 Fax: (403) 538.3732
Recipe: (Percent, Batch)
EPK 28.0 28.00 Wollastonite 28.0 28.00 Frit 3195 23.0 23.00 Flint 17.0 17.00 Nepheline syenite 4.0 4.00 ----- -------- Totals: 100.0 100.00
Comments:
From Kristen Kieffer. From Matering Cone 6 Glazes book. Variations -- Cadet #6302 2-5% Blackberry #6381 3-8% Turquoise #6364 2-6% Deep Salmon #6031 3-5% Black Nickel 1-2% Golden Ambrosia #6129 5% Amethyst 3-5% Peacock #6396 2-4% Saturn Orange #6121 3-5% Fawn #6104 5-8%
Recipe: (Percent, Batch)
Whiting 4.1 4.10 Frit 3195 41.5 41.50 G-200 feldspar 16.9 16.90 EPK 6.7 6.70 Flint 30.8 30.80 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.6 2.60
Comments:
I got this glaze from Ceramics Monthly and when I tested it -- I thought it was wonderful, but when I put it on a few larger pieces it was awful!! I'm not quite ready to give up on it. Can someone look it over and make suggestions about the portions of chemicals? On the tests it was a semi-transparent matt. On the larger pieces it ended up black and crusty and cratery. Yuck! Any help would be appreciated. Waiting hopefully with my crusty pots. Sue sue hintz
Recipe: (Percent, Batch)
Neph Sye 42.0 3360.00 Gerstley borate 12.0 960.00 Dolomite 7.0 560.00 Talc 14.0 1120.00 EPK 5.0 400.00 Flint 20.0 1600.00 ----- -------- Totals: 100.0 8000.00
Also add:
Cobalt carbonate 0.5 40.00 Chrome oxide 0.5 40.00 Iron oxide 0.5 40.00
Comments:
Colorants listed give "Peacock Blue". Glaze Type: Mg Ca Na . Opacity: ?. Firing type: Reduction .
Recipe: (Percent, Batch)
Gerstley borate 17.7 17.70 Nepheline syenite 28.5 28.46 Dolomite 10.7 10.70 Magnesium carb 4.3 4.28 EPK 6.6 6.59 Flint 32.3 32.27 ----- -------- Totals: 100.0 100.00
Comments:
Frosty thick. Variations -- Add zircopax for waxy white.
Recipe: (Percent, Batch)
Gerstley 31.0 18.00 Kona F-4 69.0 40.00 ----- -------- Totals: 100.0 58.00
Comments:
From Posey Bacopoulos. Yellow: 10% vanadium stain. Turq.: 3% copper Carb. Lavender: 0.25% cobalt carb + 2% rutile.
Recipe: (Percent, Batch)
Gerstley borate 18.0 18.00 Flint 17.0 17.00 EPK 4.0 4.00 Talc 13.0 13.00 Dolomite 8.0 8.00 Kona F-4 40.0 40.00 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 10.0 10.00 Bentonite 2.0 2.00
Comments:
from Posey Bacopoulos Variations -- yellow: 10% vanadium stain turquoise: 3% CuCO3 lavender: 0.25% CoCO3 + 2% Rutile
Recipe: (Percent, Batch)
Pemco Frit P-626 20.6 20.58 Nepheline syenite 23.8 23.85 Wollastonite 13.8 13.85 Whiting 4.6 4.62 EPK 6.8 6.83 Silica, 325 mesh 30.3 30.28 ----- -------- Totals: 100.0 100.01
Also add:
Bentonite 1.9 1.92
Comments:
C.M.C. 1 tsp I have been off-line for several days (art fair a'comin') and upon retrieving my e-mail found several of you interested in my recipe for a cone 6 clear glaze that worked well (for me, anyway) over underglazes. (Sorry for the delay) It works over the Amaco Reward Velvet Underglazes, including reds, purples, etc. I will post the original recipe and then add my revisions. OK. The above glaze crazed on my A.R.T. #135 porcelain at cone 6. Being absolutely non-technical, I stumbled in to the following substitution: I substituted calcined kaolin (comercial name Glomax, from A.R.T.) for the EPK. I also substituted Amorphous Silica for the Flint. I don't use C.M.C. I do add Flocs...it settles out. It is glossy and very clear. My samples from two/three years ago still look good, no delayed crazing. I don't use it on anything, because I found a whole palette of glazes while I was looking for a good clear, and have lost interest in underglaze decorating. The pursuit was interesting, though ;-) I found the Pemco Frit 626 through Trinity supply in Texas. I do not know about substitutes. submitted by: Candice Roeder e-mail: CRoeder@worldnet.att.net source for original recipe: James Chappell
Recipe: (Percent, Batch)
cuts 35.7 30.00 Nepheline syenite 35.7 30.00 Whiting 23.8 20.00 Talc 4.8 4.00 ----- -------- Totals: 100.0 84.00
Comments:
Variations -- Red: + bone ash 6 + iron 4 Gold: + rutile 4
Recipe: (Percent, Batch)
Custer spar 30.3 2424.00 Nepheline Sye 30.3 2424.00 Whiting 20.2 1616.00 Talc 4.0 323.00 Kaolin 9.1 727.00 Bone ash 6.1 485.00 ----- -------- Totals: 100.0 7999.00
Also add:
Iron oxide 4.0 323.00 Rutile 4.0 323.00
Comments:
Looks like Shaner Gold. Glaze Type: Ca AlMatt MidRoad. Opacity: . Firing type: Reduction .
Recipe: (Percent, Batch)
Custer spar 23.3 1861.00 Nepheline Sye 34.9 2790.00 Whiting 23.3 1861.00 Talc 5.8 465.00 Kaolin 5.8 465.00 Bone ash 7.0 558.00 ----- -------- Totals: 100.0 8000.00
Also add:
Iron oxide 4.7 372.00 Rutile 4.7 372.00
Comments:
Glaze Type: Ca MidRoad AlMatt. Opacity: . Firing type: Reduction .
Recipe: (Percent, Batch)
Custer feldspar 44.6 44.55 Whiting 21.8 21.78 Silica 12.9 12.87 China clay 14.9 14.85 Lithium carbonate 5.9 5.94 ----- -------- Totals: 100.0 99.99
Comments:
for green, add 6 gr rutile + 2 gr Cobalt Carbonate + 1 gr bentonite , for blue add .5% Cobalt Carbonate AT cone 4-5 these glazes are a wonderful matt; higher they turn 'glossy'. I especially did not like the green at this temperature - too hard and glassy looking. These recipes came from Capilano College in North Vancouver (Canada) where I took a glaze course. submitted by: Penny Anagnostopoulos e-mail: panagnos@VCC.BC.CA
Recipe: (Percent, Batch)
Nepheline syenite 40.0 40.00 Spodumene 40.0 40.00 EPK 10.0 10.00 Soda ash 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Due to the lower sintering point of ^6 glazes- you have to start reduction fairly early- at least by stoneware standards. Try ^010 as a starting point & go from there. I also used a clay body that had a higher iron content than my present ^10 body- it seemed to make a difference. submitted by: Tom Gray tgraypots@atomic.net Apply very thinly to get almost salt-glazed look in reduction.- Rick Malmgren. Variations -- warmer: + 4% rutile
Recipe: (Percent, Batch)
Alberta slip 56.0 56.10 Gerstley borate 18.7 18.70 Kona F-4 feldspar 9.4 9.40 Silica 9.4 9.40 Lithium carbonate 6.5 6.50 ----- -------- Totals: 100.0 100.10
Also add:
Superpax 9.4 9.40 Tin oxide 4.7 4.70
Comments:
From Pottery Making Illus May/Jn 2012 and ClayArt. Butter cream speckled thick over darker clay, rust thin. Breaks dark over texture. Brushes and dips well. Fired 100 deg/hr to 200 deg F; 350 deg F to 2000 deg F; 150 deg/hr to 2185 deg F - cone 6 - 15 minute hold; 9999 deg/hr to 1900 deg F; 150 deg/hr to 1500 deg F. Variations -- Blue: +Spectrum 2043 Bright Blue Stain 5% Blue: + cobalt carb 2% Green: + copper carb 2% Chartreuse: + 6236 Chartreuse stain 5% Pink: + 6088 Dark Red stain 5%
Recipe: (Percent, Batch)
Gerstley borate 5.0 5.00 Soda ash 4.0 4.00 Spodumene 22.0 22.00 Nepheline syenite 54.0 54.00 Kentucky OM #4 15.0 15.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 1.5 1.50
Comments:
best in salt or woodfire. good over iron wash. source for original recipe: Crain Edwards submitted by: Lee Love e-mail: leelove@mill2.MillComm.COM
Recipe: (Percent, Batch)
Kona F-4 feldspar 31.4 25.50 Flint 3.7 3.00 Kaolin 12.3 10.00 Dolomite 12.3 10.00 Gerstley borate 24.6 20.00 Tin oxide 3.4 2.80 Zinc oxide 12.3 10.00 ----- -------- Totals: 100.0 81.30
Also add:
Bentonite 2.5 2.00
Comments:
From Posey Bacopoulos. Variations -- Blue: 1.4% zircopax + 1.7% cobalt + 3% rutile. Turquiose: 1.4% zircopax + 3% copper carb. + 0.1% cobalt carb.
Recipe: (Percent, Batch)
Kona F-4 24.0 24.00 Flint 28.0 28.00 EPK 9.0 9.00 Dolomite 9.0 9.00 Gerstley borate 18.0 18.00 Tin oxide 3.0 3.00 Zinc oxide 9.0 9.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00
Comments:
From Posey Bacopoulos Variations -- Blue: 1.4% zircopax + 1.7% Co + 3% rutile turquoise: 1.4% zircopax + 3% CuCO3 + 0.1 % CoCO3 (one tenth percent)
Recipe: (Percent, Batch)
Kaolin 80.0 80.00 Grog (150 mesh) 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
Add color to taste. I promised a while back to list this when I found it! Kawai used a lot of thick slip trailing in his work and this was given to me by one of his apprentices, Doug Lawrie. submitted by: June M. Perry e-mail: GURUSHAKTI@aol.com
Recipe: (Percent, Batch)
Nepheline syenite 15.0 15.00 Ball clay 25.0 25.00 EPK 25.0 25.00 Frit 3124 10.0 10.00 Flint 25.0 25.00 ----- -------- Totals: 100.0 100.00
Comments:
Variations -- Black: rio 8 + black stain 10 Blue black: Co 2 + black stain 10 cream: rutile 5-6% blue-green: CrO 3 + Co 1.5 pink: Pink stain 10 teal: teal stain 6 + copper carb 3 med blue: rutile 3 + Co 1 strong green: CrO 6 any stain 8-12%
Recipe: (Percent, Batch)
Grolleg 30.0 30.00 XX Sagger 30.0 30.00 Tile 6 clay 10.0 10.00 Nepheline syenite 15.0 15.00 Flint 15.0 15.00 ----- -------- Totals: 100.0 100.00
Comments:
From Kristen Kieffer. For wet to leatherhard application. Mixed to heavy cream consistency.
Recipe: (Percent, Batch)
EPK 11.8 10.00 Calcined kaolin 11.8 10.00 Kentucky OM #4 11.8 10.00 Nepheline syenite 17.6 15.00 Frit 3124 11.8 10.00 Flint 29.4 25.00 Borax 5.9 5.00 ----- -------- Totals: 100.0 85.00
Also add:
Zircopax 17.6 15.00
Comments:
Borax in this not recommended. Over time, soluble borax makes crystals that leave glassy spots in the fired slip. Skip the borax for better shelf life.
Recipe: (Percent, Batch)
Nepheline syenite 20.0 20.00 Feldspar 20.0 20.00 Silica 20.0 20.00 Ball clay 40.0 40.00 ----- -------- Totals: 100.0 100.00
Comments:
Simple. It works. Can't be too thick. I've used OM-4, but would try Sagger xx, as the current notion seems to be that it has fewer problems. This slip will work on bisque, though needs to be thinner. The originator, Rob Forbes, applied the stuff with a three inch paint brush in thick swabs. He fired to cone 5. It is currently being used at cone 10. Enjoy - HP submitted by: Henry Pope e-mail: mikpo@www.comet.chv.va.us
Recipe: (Percent, Batch)
Kaolin 23.0 23.00 Ball clay 22.0 22.00 Feldspar 20.0 20.00 Flint 30.0 30.00 Borax 5.0 5.00 ----- -------- Totals: 100.0 100.00
Comments:
I have been using a slip recipe that I got form HANDS IN CLAY for quite awhile. It works wonderfully..I mix up a 5 gallon pail of it, then put smaller amounts in jars and add mason stains to different jars to get the colors i want - I really don't measure, just add enough by sight until it looks right. One of those small sample packets (1/4 ounce?) usually does great in a cottage cheese container filled with the white slip. Then I brush the slip on green pots, let it dry overnight if it's humid summer in northern Wisconsin, or cover with plastic overnight if the woodstove is on...the waiting makes the carving through the slip give a nicer line I feel. Once my drawings are done, I bisque, then cover with a clear glaze and fire to cone 7 or 8. the nice thing about this slip recipe is that it is good for cones 6-11, and it's true because I've used it in my electric kiln at 6 and my wood kiln at 12! Joan Slack-DeBrock/River Run Pottery P.O.Box 95 McNaughton, WI 54543 715-277-2773 riverrun@newnorth.net
Recipe: (Percent, Batch)
A.P. Green fireclay 80.0 80.00 GoldArt 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
chrome oxide 1.0 1.00 Iron oxide 2.0 2.00
Comments:
I've applied them to bone dry sculptural work, bisqued them and then have rubbed stains or oxides into the recesses, sponging off, then fired again for permanence. They are quite versatile. These recipes are from Zakin's book on Electric Kiln Ceramics. Some of the clays used in the recipe are coarse and the slip should not be strined. The result will be a coarse, sandy-textured surface, not for functional pieces. They may be applied by dipping, spraying or brushing. They may be applied to greenware or bisqued ware. They may be used alone or with stains and glazes. The appearance when fired is soft and sandy. Candice Roeder
Recipe: (Percent, Batch)
A.P. Green fireclay 70.0 70.00 GoldArt 20.0 20.00 Ball clay 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Tan Gray-green add: Chrome oxide 3 Tan Gray-blue add: Cobalt oxide 1 Iron oxide 1 I've applied them to bone dry sculptural work, bisqued them and then have rubbed stains or oxides into the recesses, sponging off, then fired again for permanence. They are quite versatile. These recipes are from Zakin's book on Electric Kiln Ceramics. Some of the clays used in the recipe are coarse and the slip should not be strined. The result will be a coarse, sandy-textured surface, not for functional pieces. They may be applied by dipping, spraying or brushing. They may be applied to greenware or bisqued ware. They may be used alone or with stains and glazes. The appearance when fired is soft and sandy. Candice Roeder
Recipe: (Percent, Batch)
A.P. Green fireclay 40.0 40.00 Cedar Heights Goldart 40.0 40.00 Cedar Heights Redart 12.0 12.00 Ball clay 6.0 6.00 Wollastonite 2.0 2.00 ----- -------- Totals: 100.0 100.00
Comments:
I've applied them to bone dry sculptural work, bisqued them and then have rubbed stains or oxides into the recesses, sponging off, then fired again for permanence. They are quite versatile. These recipes are from Zakin's book on Electric Kiln Ceramics. Some of the clays used in the recipe are coarse and the slip should not be strined. The result will be a coarse, sandy-textured surface, not for functional pieces. They may be applied by dipping, spraying or brushing. They may be applied to greenware or bisqued ware. They may be used alone or with stains and glazes. The appearance when fired is soft and sandy. Candice Roeder
Recipe: (Percent, Batch)
A.P. Green fireclay 60.0 60.00 Cedar Heights Goldart 15.0 15.00 Cedar Heights Redart 25.0 25.00 ----- -------- Totals: 100.0 100.00
Comments:
I've applied them to bone dry sculptural work, bisqued them and then have rubbed stains or oxides into the recesses, sponging off, then fired again for permanence. They are quite versatile. These recipes are from Zakin's book on Electric Kiln Ceramics. Some of the clays used in the recipe are coarse and the slip should not be strained. The result will be a coarse, sandy-textured surface, not for functional pieces. They may be applied by dipping, spraying or brushing. They may be applied to greenware or bisqued ware. They may be used alone or with stains and glazes. The appearance when fired is soft and sandy. Candice Roeder
Recipe: (Percent, Batch)
A.P. Green fireclay 70.0 70.00 Cedar Heights Goldart 20.0 20.00 Ball clay 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
I've applied them to bone dry sculptural work, bisqued them and then have rubbed stains or oxides into the recesses, sponging off, then fired again for permanence. They are quite versatile. These recipes are from Zakin's book on Electric Kiln Ceramics. Some of the clays used in the recipe are coarse and the slip should not be strined. The result will be a coarse, sandy-textured surface, not for functional pieces. They may be applied by dipping, spraying or brushing. They may be applied to greenware or bisqued ware. They may be used alone or with stains and glazes. The appearance when fired is soft and sandy. Candice Roeder
Recipe: (Percent, Batch)
Redart 84.2 84.20 Spodumene 10.5 10.50 Frit 3124 3.2 3.20 Lithium carbonate 2.1 2.10 ----- -------- Totals: 100.0 100.00
Comments:
From Mary Barranger
Recipe: (Percent, Batch)
Ball clay 30.0 30.00 Kaolin 10.0 10.00 Talc 30.0 30.00 Flint 30.0 30.00 ----- -------- Totals: 100.0 100.00
Comments:
Recipe: (Percent, Batch)
EPK 34.1 31.30 Kentucky OM #4 19.6 18.00 potspar 27.2 24.90 Flint 19.1 17.50 ----- -------- Totals: 100.0 91.70
Also add:
Zircopax Plus 8.1 7.40 Soda ash 0.2 0.20 Sodium silicate 0.2 0.20
Comments:
Recipe: (Percent, Batch)
Albany slip 60.0 60.00 Frit 5301 40.0 40.00 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 4.0 4.00
Comments:
From a University of Georgia class handout on glaze & clay from Andy Nasisse.
Recipe: (Percent, Batch)
Kaolin 30.0 30.00 Ball clay 25.0 25.00 Feldspar 20.0 20.00 Flint 25.0 25.00 ----- -------- Totals: 100.0 100.00
Comments:
I have used this successfully at ^5-^10. I also usually add about l Tbls. glycerin to a 300gm batch to aid in smooth application. Some colorants I add: Pink - DeGussa 10-15% Red - DeGussa @35% Baby blue - cobalt carb 0.75 Grey blue - cobalt carb 2, RIO 2 Navy blue - cobalt carb 5, chrome 1 Black - cobalt carb 6, chrome 6, RIO 10 (I have not tried this but got it from the recipe book at Oregon School of Arts & Crafts) Olive green - chrome 6 Med. blue - cobalt carb 1, rutile 1 RE: the latest info on Clayart regarding DeGussa Stain (i.e. cadmium) toxicity - I did not receive any such information when I bought the stain either. I believed it was safe because it is ENCAPSULATED. I am grateful to those who wrote to inform us. Laura in Oregon
Recipe: (Percent, Batch)
EPK 30.0 30.00 Kentucky OM #4 30.0 30.00 Nepheline syenite 10.0 10.00 Frit 3124 10.0 10.00 Flint 10.0 10.00 Kingsley kaolin 10.0 10.00 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax Plus 5.0 5.00
Comments:
For wet to leather-hard application. Color tests can be run to any white slip.
Recipe: (Percent, Batch)
A.P. Green fireclay 40.0 40.00 Cedar Heights Goldart 40.0 40.00 Cedar Heights Redart 12.0 12.00 Ball clay 6.0 6.00 Wollastonite 2.0 2.00 ----- -------- Totals: 100.0 100.00
Comments:
I've applied them to bone dry sculptural work, bisqued them and then have rubbed stains or oxides into the recesses, sponging off, then fired again for permanence. They are quite versatile. These recipes are from Zakin's book on Electric Kiln Ceramics. Some of the clays used in the recipe are coarse and the slip should not be strined. The result will be a coarse, sandy-textured surface, not for functional pieces. They may be applied by dipping, spraying or brushing. They may be applied to greenware or bisqued ware. They may be used alone or with stains and glazes. The appearance when fired is soft and sandy. Candice Roeder
Recipe: (Percent, Batch)
Nepheline syenite 67.0 67.00 Dolomite 10.0 10.00 EPK 8.0 8.00 Silica 9.0 9.00 Zinc oxide 6.0 6.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 3.0 3.00
Comments:
Exquisite light green gloss but no pink flecks Tested on Dillo White clay at a full ^6. submitted by: Lori Wilkinson e-mail: lorwilk@lookingglass.net
Recipe: (Percent, Batch)
Gerstley borate 59.0 59.00 Talc theoretical 41.0 41.00 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 18.0 18.00
Comments:
CM Feb. 07 p. 47. Kenny Delio. buff w/rusty mottling.
Recipe: (Percent, Batch)
Nepheline syenite 47.4 47.37 EPK 10.5 10.53 Whiting 5.3 5.26 Dolomite 10.5 10.53 Spodumene 21.1 21.05 Soda ash 5.3 5.26 ----- -------- Totals: 100.0 100.00
Also add:
Ultrox 5.3 5.26
Comments:
For 2 years I struggled with this concept & finally gave up. The fuel savings (?) were not worth the effort. The results don't compare to ^10. I agree with Peter Pinnell- sell another mug to pay for the difference in firing costs. Add .75 cobalt carb. for blue. This matte glaze breaks from rust to white (to blue w/ cob.) * I used chemical grade at the time- now I would probably test spod.LM. OR- replace spod. w/ soda feldspar & add redart for color Due to the lower sintering point of ^6 glazes- you have to start reduction fairly early- at least by stoneware standards. Try ^010 as a starting point & go from there. I also used a clay body that had a higher iron content than my present ^10 body- it seemed to make a difference. submitted by: Tom Gray e-mail: tgraypots@atomic.net
Recipe: (Percent, Batch)
Kona F-4 feldspar 20.0 20.00 Custer feldspar 20.0 20.00 Spodumene 20.0 20.00 Dolomite 20.0 20.00 Whiting 5.0 5.00 Kaolin 15.0 15.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 4.0 4.00
Comments:
This is the Alfred Spodumene glaze revised to C/6. Glaze Type: Ca Mg AlMatt. Firing type: Reduction. From Val Cushing. VC ed
Recipe: (Percent, Batch)
Nepheline syenite 50.0 50.00 Barium carbonate 10.0 10.00 Frit 3124 5.0 5.00 Whiting 5.0 5.00 Lithium carbonate 5.0 5.00 EPK 10.0 10.00 Flint 15.0 15.00 ----- -------- Totals: 100.0 100.00
Comments:
Good matt glaze for color; run tests with copper, iron, chrome, etc. Variations -- 3% iron oxide gives yellow-green.
Recipe: (Percent, Batch)
Dolomite 13.1 13.10 Lithium carbonate 3.3 3.30 Whiting 3.9 3.90 Frit 3134 27.5 27.50 EPK 22.2 22.20 Flint 30.0 30.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 2.5 2.50 Red iron oxide 2.0 2.00
Comments:
Mossy Green in oxidation or reduction w/matte crystals suspended in glassy fields. Test with other colorants. From Rick Malmgren. Variations -- blue + 1.5% cobalt carb
Recipe: (Percent, Batch)
Frit 3134 45.0 45.00 Nepheline syenite 30.0 30.00 Lithium carbonate 0.5 0.50 Kaolin 10.0 10.00 Strontium carbonate 10.0 10.00 Flint 4.5 4.50 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.0 2.00 Copper carbonate 5.0 5.00 Titanium dioxide 5.0 5.00
Comments:
Tested by Mario Mutis
Recipe: (Percent, Batch)
Flint 29.7 29.70 EPK 5.0 5.00 Kona F-4 spar 19.8 19.80 Talc theoretical 13.9 13.90 Gerstley borate 31.7 31.70 ----- -------- Totals: 100.0 100.10
Also add:
Red iron oxide 26.1 26.10
Comments:
brown breaking to cobalt blue where thin... brick red with two coats with khaki drip marks khaki tan where thick breaking to cobalt always beautiful semimatte surfaces with wonderful drip marks and hazes...so pretty with sana green over from Mish Lowe, on IRC.
Recipe: (Percent, Batch)
Georgia kaolin 9.9 9.90 Silica 18.2 18.20 Zirconium silicate 17.3 17.30 Zinc oxide 15.8 15.80 Lithium carbonate 8.5 8.50 Nepheline syenite 15.0 15.00 Whiting 15.3 15.30 ----- -------- Totals: 100.0 100.00
Comments:
Here are a couple of C 6 glazes that I use with my speckled brownstone in ox. I used zircopax. A very fine, strong, white glaze with a soft sheen. Opaque. I love the white color of this glaze. Since it turns to cement when it sits, I have started adding bentonite, which helps. It works well with other glazes that have color. submitted by: Jan Henkel e-mail: jhenkel@sunbelt.net source for original recipe: Electric Pottery by E. Cooper.
Recipe: (Percent, Batch)
Feldspar 38.9 38.94 Zinc oxide 4.4 4.42 Colemanite 16.8 16.81 Dolomite 16.8 16.81 Whiting 1.8 1.77 Kaolin 4.4 4.42 Silica 16.8 16.81 ----- -------- Totals: 100.0 99.98
Also add:
Bentonite 2.7 2.65
Comments:
Apply a fluid glaze over your base glaze - but only on the rim - maybe 1/2 to 1 down. I'm sending two recipes for such a fluid glaze for you to try. I have just received these recipes and haven't yet tested them. Remember they may react differently depending on your base glaze, firing and all the other variables. An ash glaze will often have the same effect - I'm testing one now. submitted by: Geri Huntley e-mail: JHUNTLEY@cariboo.bc.ca
Recipe: (Percent, Batch)
Whiting 25.9 25.87 Ferro Frit 3134 13.9 13.93 Kaolin 41.3 41.29 Silica 11.0 10.95 Custer feldspar 8.0 7.96 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 19.9 19.90
Comments:
Apply a fluid glaze over your base glaze - but only on the rim - maybe 1/2 to 1 down. I'm sending two recipes for such a fluid glaze for you to try. I have just received these recipes and haven't yet tested them. Remember they may react differently depending on your base glaze, firing and all the other variables. An ash glaze will often have the same effect - I'm testing one now. submitted by: Geri Huntley e-mail: JHUNTLEY@cariboo.bc.ca
Recipe: (Percent, Batch)
Kaolin 29.3 29.00 Flint 17.2 17.00 Frit 3134 53.5 53.00 ----- -------- Totals: 100.0 99.00
Also add:
Tin oxide 9.1 9.00 Red iron oxide 3.0 3.00 Rutile 4.0 4.00
Comments:
Lee Shaw cone 6 recipe
Recipe: (Percent, Batch)
Dolomite 6.6 6.60 Gerstley borate 13.0 13.00 Soda ash 0.1 0.10 Talc theoretical 13.1 13.10 Custer feldspar 41.0 41.00 EPK 6.6 6.60 Flint 19.6 19.60 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 9.7 9.70 Red iron oxide 2.0 2.00 Rutile 5.5 5.50
Comments:
Good as a ground color under other glazes. From Rick Malmgren in CM.
Recipe: (Percent, Batch)
Wollastonite 30.3 30.30 Talc theoretical 8.9 8.90 Spodumene 49.8 49.80 EPK 11.0 11.00 ----- -------- Totals: 100.0 100.00
Comments:
Eric Hansen, Lawrence, Kansas wabi_sabi@mailexcite.com
Recipe: (Percent, Batch)
Zinc oxide 4.5 4.50 Whiting 10.0 10.01 Talc 2.1 2.10 Barium carbonate 11.0 11.01 F-4 Feldspar 42.0 42.04 EPK 8.3 8.31 Ball clay 8.0 8.01 Silica 14.0 14.01 ----- -------- Totals: 100.0 99.99
Also add:
Rutile 5.0 5.01
Comments:
kiln type: gas submitted by: John Anthony e-mail: JTRAX@AOL.COM
Recipe: (Percent, Batch)
Gerstley borate 14.7 14.70 Spodumene 31.6 31.60 EPK 3.2 3.20 Dolomite 7.4 7.40 Talc 13.7 13.70 Flint 29.5 29.50 ----- -------- Totals: 100.0 100.10
Also add:
Granular manganese 0.5 0.50 Manganese dioxide (milled) 0.5 0.50
Comments:
Dan Saultman in Horribly Hot Colorado (100's today) http://www.concentric.net/~clay-art/Index.shtml
Recipe: (Percent, Batch)
Flint 29.7 29.70 EPK 5.0 5.00 Feldspar 19.8 19.80 Talc theoretical 13.9 13.90 Gerstley borate 31.7 31.70 ----- -------- Totals: 100.0 100.10
Also add:
Iron oxide 3.0 3.00 Rutile 3.0 3.00
Comments:
Makes for a nice base glaze. Oil Spot looks great over this one. sue hintz
Recipe: (Percent, Batch)
Neph Sye 40.0 40.00 Frit 3110 9.0 9.00 Barium carbonate 9.0 9.00 Whiting 16.0 16.00 EPK 10.0 10.00 Flint 16.0 16.00 ----- -------- Totals: 100.0 100.00
Comments:
Variations -- For glossy deep green, add 5.0% Iron Oxide. Tannish-grey matt, add 3.0% Rutile.
Recipe: (Percent, Batch)
Cornwall Stone 67.3 67.40 Whiting 9.0 9.00 Silica 6.2 6.20 Dolomite 7.9 7.90 Gerstley borate 3.4 3.40 Lithium carbonate 6.2 6.20 ----- -------- Totals: 100.0 100.10
Also add:
Red iron oxide 11.2 11.20
Comments:
Transparent amber with floating small golden crystals. Pools.
Recipe: (Percent, Batch)
Custer feldspar 43.2 43.20 Whiting 21.0 21.00 EPK 9.9 9.90 Silica 25.9 25.90 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 3.7 3.70 Red iron oxide 19.8 19.80
Comments:
Here a the glazes we've found work out OK, and are currently studio shop glazes. We have noticed that a slightly heavier reduction is needed for cone 6 than in cone 9/10. submitted by: Candice Roeder e-mail: CRoeder1@aol.com
Recipe: (Percent, Batch)
Cornwall Stone 67.8 67.80 Whiting 9.0 9.00 Gerstley borate 3.1 3.10 Lithium carbonate 6.1 6.10 Dolomite 7.8 7.80 Flint 6.2 6.20 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 11.0 11.00
Comments:
Gold flecks on a red-brown base. At cone 5 glossy brown w/matt gold haze. At cone 6 deep glossy chocolate w/gold flecks. At cone 7 gold disappears: dark glossy brown breaking to medium tan.
Recipe: (Percent, Batch)
Frit 3134 10.5 10.50 Minspar 200 36.5 36.50 Talc theoretical 10.0 10.00 Wollastonite 18.0 18.00 EPK 13.0 13.00 Silica 12.0 12.00 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 8.0 8.00 Bentonite 2.0 2.00
Comments:
Recipe: (Percent, Batch)
Whiting 20.0 20.00 Custer feldspar 35.0 35.00 Kentucky OM #4 15.0 15.00 Flint 30.0 30.00 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 10.0 10.00
Comments:
Yields yellow "tea dust" crystals in reduction. Just brown in reduction. From Rick Malmgren in CM.
Recipe: (Percent, Batch)
Potash feldspar 43.2 43.21 Kaolin 9.9 9.88 Silica 23.5 23.46 Whiting 11.1 11.11 Gerstley borate 12.3 12.35 ----- -------- Totals: 100.0 100.01
Also add:
Iron oxide 9.9 9.88
Comments:
Shiny black, ok. From Brian Kemp, (kempb@nievax.nie.ac.sg) via Rose Downs on ClayArt listserv. CLAY COLOR/TYPE: Buff Stoneware Fired at 100 degrees per hour to 600 degrees, then free for all to cone 6-7. Kiln Size, Cromarty 25 cu ft. Manufactured in the UK. CONTRIBUTOR: Brian Kemp, Nanyang Technological University, Block B, Room 216, 469 Bukut Timah Rd., Singapore, 1025 TEST SITE: Nanyang Technological University, Singapore
Recipe: (Percent, Batch)
Kona F-4 feldspar 45.5 45.50 Whiting 8.3 8.30 Dolomite 6.0 6.00 Silica 20.0 20.00 Zinc oxide 4.0 4.00 Kaolin 2.5 2.50 Gerstley borate 13.7 13.70 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 10.0 10.00
Comments:
Frank Martin Art Deparment/Ceranics 92nd street YM-YWHA 1395 Lexington Ave NY, NY. 10128 p0tters2@aol.com
Recipe: (Percent, Batch)
Silica 15.3 15.31 Ferro Frit 3134 60.2 60.20 Custer feldspar 10.2 10.20 EPK 14.3 14.29 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 10.2 10.20
Comments:
Howdy All - Here's a Tizzy I use with no lead. If anyone uses this glaze and does the glaze tests for color and they work, please let me know. submitted by: Capt. Mark Issenberg e-mail: ASHPOTS@aol.com
Recipe: (Percent, Batch)
Soda feldspar 56.1 56.10 Wollastonite 12.2 12.20 Ball clay 21.9 21.95 Gerstley borate 9.8 9.76 ----- -------- Totals: 100.0 100.01
Also add:
Zircopax 21.9 21.95 Cobalt oxide 2.4 2.44
Comments:
Tested on white stoneware. HORRIBLE GUMMY BLUE. OPAQUE. LOOKS LIKE BLUEBERRY CHEWING GUM. submitted by: Sharon LaRocca-Miranda e-mail: FMIRANDA@alpha.CC.OBERLIN.EDU , FMiranda@oberlin.edu source for original recipe: Zakin
Recipe: (Percent, Batch)
Frit 3134 11.0 11.00 Nepheline syenite 23.6 23.60 Bone ash 7.9 7.90 Magnesium carbonate 6.3 6.30 Whiting 7.9 7.90 EPK 21.6 21.60 Silica 21.7 21.70 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 10.0 10.00
Comments:
See more info at http://www.johnpost.us/. Must have adequately thick application and slow cooling for iron crystals to form. From article by Pete Pinnell in Clay Times. May/Jn 2009, p.21.Less shiny than Tomato Red Pete's #3. Calls for Spanish RIO, but Pete says it doesn't much matter. Variations -- 8% less red. 12% is a more broken-looking orange. 14% goes to a duller brown. Variation: +2% lithium carb + 10-12% RIO, bright iron rust spangles. Variation: add 2% rutile to the red version to get pumpkin orange.
Recipe: (Percent, Batch)
Frit 3134 9.8 9.80 Kona F-4 feldspar 33.6 33.60 Bone ash 10.7 10.70 Magnesium carbonate 5.9 5.90 Whiting 3.8 3.80 EPK 12.5 12.50 Silica 23.7 23.70 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 10.0 10.00
Comments:
Must have adequate thickness and slow cooling to get good color development. Shinier than John Post's Tomato Red. Variations -- RIO 10-12% works well.
Recipe: (Percent, Batch)
Frit 3134 9.8 9.80 Kona F-4 feldspar 33.6 33.60 Bone ash 10.7 10.70 Magnesium carbonate 5.9 5.90 Whiting 3.8 3.80 EPK 12.5 12.50 Silica 23.7 23.70 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 10.0 10.00
Comments:
12% gives bigger crystals. Pete Pinnell in Clay Times. May/Jn 2009, p.21.Shinier than Tomato Red John Post Variations -- +2% rutile for pumpkin orange
Recipe: (Percent, Batch)
EPK 5.9 5.90 Flint 29.4 29.40 Custer feldspar 19.6 19.60 Talc theoretical 13.7 13.70 Gerstley borate 31.4 31.40 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 14.7 14.70
Comments:
Here's one I tested that I liked a great deal. Shiny Red mottled foreground. Background variations of light to medium Tans/Browns. Beautiful Glaze andrew lubow
Recipe: (Percent, Batch)
Nepheline syenite 44.0 44.00 Zinc oxide 13.0 13.00 Whiting 7.0 7.00 EPK 8.0 8.00 Flint 28.0 28.00 ----- -------- Totals: 100.0 100.00
Comments:
Recipe: (Percent, Batch)
Custer feldspar 50.3 50.20 Silica 25.1 25.10 Whiting 9.1 9.10 Dolomite 5.0 5.00 Gerstley borate 7.5 7.50 Zinc oxide 3.0 3.00 ----- -------- Totals: 100.0 99.90
Also add:
Copper carbonate 7.0 7.00
Comments:
originally suggested 7-10% copper carbonate. a deep green translucent that I like over white glazes, for a mottled, opaque effect. Also nice layered with cobalt blue glazes. I have found that many cone 10 glazes will at least do something interesting at cone 6. Try it! source of original recipe: I adapted this off the base for Tom Coleman's cone 10 red. purple. submitted by: Sumi Dick e-mail: Sumi@AOL.COM
Recipe: (Percent, Batch)
Nepheline Sye 55.6 4445.00 Whiting 9.1 727.00 Talc 6.1 485.00 Flint 23.2 1858.00 EPK 6.1 485.00 ----- -------- Totals: 100.0 8000.00
Comments:
Other seven transparents are at end of file. Glaze Type: Ca Na . Opacity: Transparent. Firing type: Ox or Red .
Recipe: (Percent, Batch)
Custer feldspar 64.0 64.00 Whiting 18.0 18.00 Zinc oxide 5.0 5.00 Talc 4.0 4.00 EPK 9.0 9.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Ca MidRoad. Firing type: Ox or Red. From Val Cushing. VC ed
Recipe: (Percent, Batch)
Custer feldspar 40.0 40.00 Gerstley borate 13.0 13.00 Whiting 15.0 15.00 Zinc oxide 4.0 4.00 Flint 18.0 18.00 EPK 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Ca B MidRoad. Firing type: Ox or Red. From Val Cushing. VC ed
Recipe: (Percent, Batch)
Cornwall Stone 47.0 47.00 Gerstley borate 47.0 47.00 EPK 4.0 4.00 Bentonite 2.0 2.00 ----- -------- Totals: 100.0 100.00
Comments:
Shows no Boron streaking typical of high B2O3 glazes.
Recipe: (Percent, Batch)
Nepheline syenite 46.0 46.00 Whiting 8.0 8.00 Zinc oxide 10.0 10.00 Flint 28.0 28.00 EPK 8.0 8.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Zn Ca Na. Firing type: Ox or Red. From Val Cushing. VC ed
Recipe: (Percent, Batch)
Custer spar 23.0 1840.00 Whiting 10.0 800.00 Zinc oxide 6.0 480.00 Talc 1.0 80.00 Flint 29.0 2320.00 EPK 5.0 400.00 White Lead 26.0 2080.00 ----- -------- Totals: 100.0 8000.00
Comments:
Safe Lead Glaze Glaze Type: Ca Zn RawLead. Opacity: Transparent. Firing type: Oxidation .
Recipe: (Percent, Batch)
Frit 3304 35.0 2800.00 Frit 3124 40.0 3200.00 Zinc oxide 10.0 800.00 EPK 15.0 1200.00 ----- -------- Totals: 100.0 8000.00
Comments:
Lead Boro-Silicate. Industrial China glaze. This glaze has a low expansion-- doesen't craze much. Glaze Type: Zn Ca Pb B FritLead. Opacity: Transparent. Firing type: Oxidation .
Recipe: (Percent, Batch)
Oxford spar 33.0 33.00 Gerstley borate 23.0 23.00 Whiting 8.0 8.00 Flint 18.0 18.00 EPK 10.0 10.00 Barium carbonate 8.0 8.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Ca B MidRoad. Opacity: Transparent. Firing type: Ox or Red .
Recipe: (Percent, Batch)
Kona F-4 feldspar 40.0 40.00 Gerstley borate 15.0 15.00 Whiting 15.0 15.00 Tile 6 clay 15.0 15.00 Silica 15.0 15.00 ----- -------- Totals: 100.0 100.00
Comments:
Clay Times Sept./Oct. 08. By Barbara Tipton.
Recipe: (Percent, Batch)
Custer feldspar 40.0 40.00 Gerstley borate 18.0 18.00 Whiting 16.0 16.00 EPK 10.0 10.00 Flint 16.0 16.00 ----- -------- Totals: 100.0 100.00
Comments:
From George Bowes and Matt Nolen.
Recipe: (Percent, Batch)
Gerstley borate 6.6 6.60 Nepheline syenite 18.1 18.10 EPK 12.1 12.10 Magnesium carbonate 2.2 2.20 Whiting 22.5 22.50 Flint 38.5 38.50 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 1.7 1.70
Comments:
This version should have less crazing, but may go opaque If that happens, try adding a little (1-2%) lithium carbonate to flux it out. RB - revised for Michelle Lowe (formerly Pale Rutile Blue) 2 transparent and semi matt, and NOT crazed. But no sign of the pale blue to be found. GREAT semi mat clear, left underglazes true to color really well.
Recipe: (Percent, Batch)
Talc theoretical 11.7 11.70 Whiting 11.1 11.10 Custer feldspar 14.9 14.90 Frit 3134 23.4 23.40 EPK 19.1 19.10 Flint 19.8 19.80 ----- -------- Totals: 100.0 100.00
Also add:
Cobalt oxide 0.5 0.50 chrome oxide 0.5 0.50
Comments:
From Rick Malmgren in CM.
Recipe: (Percent, Batch)
Custer feldspar 33.5 33.50 Frit 3819 25.3 25.30 Flint 25.3 25.30 Whiting 5.6 5.60 Colemanite 6.5 6.50 Ball clay 3.8 3.80 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 3.0 3.00 Bentonite 1.0 1.00
Comments:
add CMC gum 12 tsp per 100 gms.
Recipe: (Percent, Batch)
Custer feldspar 33.5 33.50 Frit 3819 25.3 25.30 Flint 25.3 25.30 Whiting 5.6 5.60 Colemanite 6.5 6.50 Ball clay 3.8 3.80 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 3.0 3.00 Bentonite 1.0 1.00
Comments:
add CMC gum 12 tsp per 100 gms.
Recipe: (Percent, Batch)
Nepheline syenite 22.8 22.80 Silica 12.1 12.10 Strontium carbonate 36.2 36.20 Lithium carbonate 6.0 6.00 Kaolin 22.8 22.80 ----- -------- Totals: 100.0 99.90
Also add:
Copper carbonate 8.4 8.40
Comments:
We call them Brilliant Matt Purple and Brilliant Matt Turquoise. They are volatile so be very careful with your kiln shelves. As you can see they both use the same ingredients, but in different proportions. He fires to cone 6 (1200/1220 C)You have to watch your application thickness to get the result you want. We have fired the BMP from 950 C to almost 1300 C with different results but always pleasantly surprised. Do not expect consistancy with these glazes. submitted by: Ralph Loewenthal e-mail: fayralph@sprintlink.co.za
Recipe: (Percent, Batch)
Custer feldspar 38.3 36.00 Wollastonite 21.3 20.00 Zinc oxide 12.8 12.00 Flint 27.7 26.00 ----- -------- Totals: 100.0 94.00
Also add:
Copper carbonate 4.3 4.00
Comments:
should be ok for food. Clay Times Nov./Dec. p.51. From B and R Pearson.
Recipe: (Percent, Batch)
Strontium carbonate 26.2 26.20 Nepheline syenite 61.1 61.10 EPK 3.9 3.90 Flint 7.0 7.00 Lithium carbonate 1.8 1.80 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 4.4 4.40 Bentonite 1.8 1.80
Comments:
Kathy Schuetz
Recipe: (Percent, Batch)
Nepheline syenite 60.0 60.00 Strontium carbonate 25.0 25.00 Lithium carbonate 2.0 2.00 EPK 4.0 4.00 Silica 9.0 9.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 4.0 4.00 Bentonite 2.0 2.00
Comments:
The other day a matt turquoise glaze was posted on Clayart. I am suggesting that midfire potters not use this Maryland glaze for food containers. It doesn't have enough silica to keep the copper properly bound when faced with food acids. Adapting the same Seger formula, this recipe is more balanced. Only tests will show if these yield an acceptable colour and surface on your claybody. submitted by: Tom Buck e-mail: Tom.Buck@freenet.hamilton.on.ca or http://digitalfire.com/magic/tombuck.htm
Recipe: (Percent, Batch)
Zinc oxide 13.0 13.00 Colemanite 13.0 13.00 Barium carbonate 6.0 6.00 Talc theoretical 6.0 6.00 Keystone spar 40.0 40.00 Flint 22.0 22.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 3.0 3.00 Copper carbonate 2.0 2.00
Comments:
Glaze Type: Zn B MidRoad. Opacity: . Firing type: Oxidation .
Recipe: (Percent, Batch)
K-200 feldspar 46.0 46.00 Soda ash 5.0 5.00 Gerstley borate 12.0 12.00 Whiting 10.0 10.00 Barium carbonate 5.0 5.00 Lithium carbonate 2.0 2.00 Flint 20.0 20.00 ----- -------- Totals: 100.0 100.00
Also add:
Macaloid 2.0 2.00 Titanium dioxide 4.0 4.00 Copper carbonate 5.0 5.00
Comments:
AU Sp '92 tested by KG in OXIDATION at C/6 on dark brown clay body - a knockout glaze! The most interesting of the Starshine series to date tho the green hue was lost. Definitely RUNNY. Good in SODA. Now - how do we get this color at C/9-10? VC ed
Recipe: (Percent, Batch)
Nepheline syenite 41.5 41.50 Barium carbonate 27.8 27.80 Lithium carbonate 4.9 4.90 Whiting 4.9 4.90 Flint 14.5 14.50 Gerstley borate 2.0 2.00 EPK 4.5 4.50 ----- -------- Totals: 100.0 100.10
Also add:
Bentonite 2.0 2.00 Copper carbonate 12.0 12.00
Comments:
Translucent matte. NOT food safe due to barium content. From Shanon Nelson. Variations -- green: 12 copper carb + 8 RIO
Recipe: (Percent, Batch)
Mason Stain 60.0 60.00 Frit 3124 40.0 40.00 ----- -------- Totals: 100.0 100.00
Comments:
From a handout bearing Anne Kraus' name. 'Stain can be painted on bisque ware, clear sprayed over.'
Recipe: (Percent, Batch)
Nepheline Sye 40.0 3200.00 Gerstley borate 5.0 400.00 Whiting 16.0 1280.00 Dolomite 3.0 240.00 Zinc oxide 2.0 160.00 Frit 3124 10.0 800.00 EPK 4.0 320.00 Flint 20.0 1600.00 ----- -------- Totals: 100.0 8000.00
Comments:
Val, please name this. Glaze Type: Ca Na. Opacity: Transparent. Firing type: Ox or Red .
Recipe: (Percent, Batch)
Kona F-4 Feldspar 45.0 45.00 Gerstley borate 20.0 20.00 Whiting 5.0 5.00 Barium carbonate 15.0 15.00 EPK 5.0 5.00 Flint 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Base glaze has typical boron bluish streaks which are imparted to all colorants. With 6% SnO or 12% zircopax becomes white opaque Glaze Type: Ca Ba Na B. From Val Cushing.. TESTED OK FOR FOOD. VC ed
Recipe: (Percent, Batch)
Frit 3124 60.0 60.00 Gerstley borate 10.0 10.00 Flint 10.0 10.00 EPK 10.0 10.00 Whiting 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Ca B. Firing type: Ox or Red From Val Cushing. VC ed
Recipe: (Percent, Batch)
Nepheline syenite 33.0 33.00 Whiting 16.0 16.00 Wollastonite 4.0 4.00 Dolomite 5.0 5.00 Barium carbonate 5.0 5.00 EPK 5.0 5.00 Flint 11.0 11.00 Frit 3110 21.0 21.00 ----- -------- Totals: 100.0 100.00
Also add:
Red iron oxide 5.0 5.00 Lithium Carb 6.0 6.00
Comments:
Iron gives yellow, orangish, green. Glaze Type: Ca Na. Firing type: Ox or Red From Val Cushing.TESTED OK FOR FOOD. VC ed
Recipe: (Percent, Batch)
Nepheline syenite 50.0 50.00 Barium carbonate 10.0 10.00 Frit 3124 5.0 5.00 Whiting 5.0 5.00 Petalite 5.0 5.00 EPK 10.0 10.00 Flint 15.0 15.00 ----- -------- Totals: 100.0 100.00
Comments:
Very good for COLOR .Copper Carbonate (2.0%) produces blue green, Chrome ( 1.0%) produces yellow green. Glaze Type: Na Ca Ba AlMatt. Firing type: Ox or Red. From Val Cushing. BASE TESTED SAFE FOR FOOD VC ed
Recipe: (Percent, Batch)
Nepheline syenite 30.0 30.00 Whiting 10.0 10.00 Barium carbonate 10.0 10.00 EPK 10.0 10.00 Flint 10.0 10.00 Frit 3110 25.0 25.00 Zinc oxide 5.0 5.00 ----- -------- Totals: 100.0 100.00
Comments:
Red iron (5%) gives orange yellow to green. Manganese (1.0%) gives violet pink. Glaze Type: Ca Na. Firing type: Ox or Red From Val Cushing.TESTED OK FOR FOOD. VC ed
Recipe: (Percent, Batch)
Nepheline syenite 15.0 15.00 Whiting 10.0 10.00 Barium carbonate 10.0 10.00 EPK 10.0 10.00 Flint 10.0 10.00 Frit 3110 30.0 30.00 Petalite 10.0 10.00 Titanium dioxide 5.0 5.00 ----- -------- Totals: 100.0 100.00
Comments:
Soda Alumina matt. Strong color from all oxides. 2% CuCO3 gives blue green. Glaze Type: Ca Na . Firing type: Ox or Red From Val Cushing. TESTED OK FOR FOOD. VC ed
Recipe: (Percent, Batch)
Nepheline syenite 25.0 25.00 Gerstley borate 18.0 18.00 Whiting 2.0 2.00 EPK 10.0 10.00 Flint 15.0 15.00 Zinc oxide 5.0 5.00 Frit 3124 25.0 25.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 5.0 5.00
Comments:
Tin causes colors to break rusty where thin. Variations -- 2% copper gives blue green
Recipe: (Percent, Batch)
Nepheline syenite 25.0 25.00 Gerstley borate 18.0 18.00 Whiting 2.0 2.00 EPK 10.0 10.00 Flint 15.0 15.00 Zinc oxide 5.0 5.00 Frit 3124 25.0 25.00 ----- -------- Totals: 100.0 100.00
Also add:
Tin oxide 5.0 5.00
Comments:
Tin causes colors to break rusty where thin. Variations -- 2% copper gives blue green
Recipe: (Percent, Batch)
Albany Slip 72.0 72.00 Cryolite 14.0 14.00 Gerstley borate 7.0 7.00 Barium Carb 7.0 7.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Ca Na Mg Slip Glaze Al Matt. Firing type: Ox or Red From Val Cushing. TESTED OK FOR FOOD VC ed.
Recipe: (Percent, Batch)
Custer feldspar 40.0 40.00 Frit 3124 9.0 9.00 Whiting 16.0 16.00 Talc 9.0 9.00 EPK 10.0 10.00 Flint 16.0 16.00 ----- -------- Totals: 100.0 100.00
Comments:
From Val Cushing. Wonderful surface. Sensuous, smooth satin matte. Pearl-like. Colors keep the same character. Gorgeous base glaze.
Recipe: (Percent, Batch)
Nepheline syenite 20.0 20.00 Whiting 20.0 20.00 EPK 20.0 20.00 Flint 15.0 15.00 Frit 3124 25.0 25.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Ca AlMatt. Firing type: Ox or Red From Val Cushing. VC ed.
Recipe: (Percent, Batch)
Custer feldspar 52.0 52.00 Whiting 19.0 19.00 Zinc oxide 9.0 9.00 EPK 14.0 14.00 Flint 6.0 6.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Ca Zn AlMatt. Firing type: Ox or Red From Val Cushing. VC ed
Recipe: (Percent, Batch)
Apple Wood Ash 50.0 50.00 Gerstley borate 20.0 20.00 Whiting 12.0 12.00 EPK 8.0 8.00 Flint 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
Typical ash looking, drippy, webby, rivulets.
Recipe: (Percent, Batch)
Nepheline syenite 40.0 40.00 Gerstley borate 5.0 5.00 Whiting 16.0 16.00 Dolomite 3.0 3.00 Zinc oxide 2.0 2.00 Frit 3124 10.0 10.00 EPK 4.0 4.00 Flint 20.0 20.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Ca Na. Firing type: Ox or Red. From Val Cushing. VC ed
Recipe: (Percent, Batch)
Frit 3110 40.0 40.00 Frit 3124 10.0 10.00 Nepheline Sye 20.0 20.00 Flint 15.0 15.00 Clay 10.0 10.00 Soda ash 5.0 5.00 ----- -------- Totals: 100.0 100.00
Comments:
High soda glaze. Crazes. 2% CuCO3 gives blue. Glaze Type: Na Ca. Firing type: Oxidation From Val Cushing. VC ed
Recipe: (Percent, Batch)
Nepheline syenite 53.0 53.00 Whiting 18.0 18.00 Zinc oxide 8.0 8.00 EPK 15.0 15.00 Flint 6.0 6.00 ----- -------- Totals: 100.0 100.00
Comments:
Glaze Type: Ca Zn Na AlMatt. Firing type: Ox or Red From Val Cushing. VC ed
Recipe: (Percent, Batch)
Cornwall Stone 40.0 40.00 Ferro frit 3124 9.0 9.00 Talc 9.0 9.00 Whiting 16.0 16.00 EPK 10.0 10.00 Flint 16.0 16.00 ----- -------- Totals: 100.0 100.00
Comments:
I added .2% Epsom Salts to this to improve raw glaze suspension. This glaze produced a misty affect, which I believe Eleanora Eden(?) was after some time ago. It was applied to Miller #15 Cone 6 Porcelain bisque. I fired to Cone 6 using an Orton Cone 7 centered in kiln sitter with no Guard Cones. The glaze was much as described by V.C. The semi-opacity produces a misty appearance over underglaze. The underglaze I used in the test was Duncan C154, Cobalt Navy Blue. After painting the UG onto the bisque, I re-fired to Cone 06. The glaze was applied over this in 1 & 2 coats by dipping, then fired to Cone 6. The underglaze showed through 1 or 2 coats with a better contrast under 2 coats. Lettering painted in underglaze onto the bisque showed through the glaze quite clearly. However, carving into the porcelain (also stoneware) clay surface was completely or partially obliterated under this glaze. If you carve designs onto a pot which will be covered by this glaze, you'll need to take measures not to let the carved marks be blocked back out. (Remove or prevent the glaze from covering areas where you want the carving to show.) Wax resist is harder to work with for this glaze, so I'd consider scratching or scraping off unwanted glaze. Fired to maturity, the glaze didn't run back into letters created by scratching into the raw glaze. In fact, where the scratched-in letters appeared over the dk. blue UG, they showed up very clearly, retaining a crisp edge. They stood out better against 2 coats (rather than 1) of glaze. This looks promising as a handy way to work with lettering or linear design. I got delayed crazing from this glaze over the Miller #15. None in evidence yet over Miller #55, which is a buff-white. stoneware, Cone 6-9 (this clay body doesn't perform well in microwave ovens). There also was some slight cratering of the glaze on Miller #15 where applied thickly. When 2 light coats of this glaze were poured over 2 light coats of Spinach Green, it was transmuted into an attractive semi-matt, waxy Lettuce Green (voila- a vitreous tossed salad. Come to think of it, I had one of those at Red Lobster not too long ago. There was lots of sand in it.). The base for Spinach Green, originally a Richard Behrens glaze, has been used by Peter King (see CM 12/85, p.36). It has a wide Cone range, incl. Spinach Green Gerstley Borate 50 EP Kaolin 15 Flint 35 Add: Chrome Oxide, 1-2% Testing done by Joyce Jackson jjack82938@aol.com
Recipe: (Percent, Batch)
Barnard clay 72.2 72.22 Custer feldspar 16.7 16.67 Whiting 11.1 11.11 ----- -------- Totals: 100.0 100.00
Comments:
kiln type: electric Cone 9 and 6, clay: Plainsman M460 and H430, electric fire, applied to bisque. ALberta slip: At cone 9 Alberta by itself it makes a rich chocolate brown. It's too refractory to work at cone 6 by itself, I was told, so I didn't test it.I added 30% Gerstley borate which was the wrong thing to do, as Alberta is very glassy to begin with, but I had intended to test at cone 6 as well so I tested for both 6 and 9. I didn't really like the result at cone 6 with the gerstley, as it was a frosty transparent olive green (at cone 9 it was a RUNNY transparent olive green. Adding Manganese or cobalt to the Alberta slip would probably give a really nice black. What I left out in making this one was Gerstley 10 (Rob uses Colemanite), but what I ended up with was a stony black with very tiny brown specks. Tends to crawl if too thick. Rob's recipe was great too, and that one SHOULD be thick, he says. His recipe also works on greenware, he said, but I haven't tried it yet. submitted by: Vickie Sproule e-mail: jsproule@mars.ark.com
Recipe: (Percent, Batch)
Zinc oxide 8.3 8.27 Colemanite 17.5 17.54 Barium carbonate 6.7 6.71 Talc 6.4 6.44 G-200 Feldspar 38.6 38.56 Silica 22.5 22.48 ----- -------- Totals: 100.0 100.00
Comments:
Add 1% Bentonite. Color Variations: A: Add 2% Copper Oxide B: For blue Add 1% Cobalt Oxide C: Nickel Oxide 1% D: For blue-grey add Nickel Oxide 1%, Cobalt Oxide 1% submitted by: GURUSHAKTI@aol.com
Recipe: (Percent, Batch)
Custer feldspar 33.6 33.60 Whiting 20.2 20.20 Flint 17.3 17.30 Frit 3195 28.9 28.90 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 1.0 1.00
Comments:
Developed by Valerie Duncan. Nice waxy surface, goes to whitish when thick. Crazed on her clay body.
Recipe: (Percent, Batch)
Custer feldspar 48.2 41.00 Silica 23.5 20.00 Gerstley borate 14.1 12.00 Dolomite 8.2 7.00 Kaolin 5.9 5.00 ----- -------- Totals: 100.0 85.00
Comments:
As a result of seeing, Reading and being fascinated By Carleton Ball book, I fall in love with the waxy glazes. I had one before but never used it correctly. I tested a glaze was posted y John Post in 19997: A decorative glaze: WAXY WHITE^6 TO ^10 The result: The glaze looks to me like the glazes (as they look in the book and the net of Japanese tea bowls) some decorative pinholes not fully mature, but enough to make it a wonderful glaze please see it in: http://members4.clubphoto.com/_cgi-bin/getImage.pl?imgID=14906108-23d5&trans= If it does not open the last slide in: http://members4.clubphoto.com/ababi306910/185990/ Seger Weight% KNO 0.218 6.67% CaO 0.332 6.97% MgO 0.450 6.78% Al2O3 0.257 9.81% B2O3 0.147 3.83% SiO2 2.933 65.94% K2O 0.134 4.71% Na2O 0.084 1.96% Al:Si 11.40 Expan. 6.56 ST 358.96 The last slide,the one in the LEFT AbabiAbabi Sharon Glaze addict Kibbutz Shoval Israel
Recipe: (Percent, Batch)
Nepheline syenite 74.3 75.00 Zinc oxide 2.0 2.00 Dolomite 5.0 5.00 Whiting 3.0 3.00 EPK 6.9 7.00 Flint 8.9 9.00 ----- -------- Totals: 100.0 101.00
Comments:
From Kevin Snipes. Over black slip made w/copper, slip bleeds green.
Recipe: (Percent, Batch)
Lithium carbonate 1.0 1.00 Strontium carbonate 20.6 20.00 Nepheline syenite 61.9 60.00 Ball clay 10.3 10.00 Flint 6.2 6.00 ----- -------- Totals: 100.0 97.00
Also add:
Titanium dioxide 5.2 5.00 Copper carbonate 5.2 5.00
Comments:
From Pete Pinnell via Posey Bacopoulos. Soft satiny goldish green.See article Clay Times Jan/Feb 04 p.17. This is the same glaze as Strontium Matte Pete Pinnell, a cone 10 glaze. Not using colorants, or using refractory colorants can make this glaze underfired at cone 6. Recipe from Sandy Lance shows flint as 9. Variations -- Periwinkle: 1.5% cobalt carb. + 4% copper carb.
Recipe: (Percent, Batch)
Custer feldspar 34.9 34.90 Gerstley borate 31.5 31.50 Silica 19.8 19.80 Kaolin 5.9 5.90 Zinc oxide 4.9 4.90 Whiting 3.0 3.00 ----- -------- Totals: 100.0 100.00
Comments:
From a University of Georgia class handout on glaze & clay from Andy Nasisse. Add 4% Copper carb for mottled blue green. Add 1/2% cobalt carb. + 1% Manganese dioxide + 1% red iron oxide for rich blue.
Recipe: (Percent, Batch)
Kona F-4 feldspar 39.8 39.80 Silica 19.6 19.60 Gerstley borate 12.6 12.60 Dolomite 6.8 6.80 Kaolin 4.4 4.40 Talc theoretical 12.4 12.40 Lithium carbonate 3.4 3.40 Borax 1.0 1.00 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 11.7 11.70 Bentonite 1.0 1.00
Comments:
Here is a cone 6-7 oxidation white glaze I have had a lot of success with. I've had lots of success adding colorants to this glaze, and at cone 7, it has a very nice texture. At cone 6 it is kind of flat. submitted by: Judy at Axner e-mail: AXNER@delphi.com
Recipe: (Percent, Batch)
Kona F-4 feldspar 64.6 64.70 Gerstley borate 11.8 11.80 Whiting 9.4 9.40 EPK 7.1 7.10 Silica 7.1 7.10 ----- -------- Totals: 100.0 100.10
Also add:
Superpax 17.7 17.70 Bentonite 3.5 3.50
Comments:
This is a studio glaze here at the u of m. It crawls a little when applied very thick,- its name is SUPER WHITE. i was just in the process of looking for other glazes to test, so let me know if you have any, thanks submitted by: Ed Brownlee e-mail: edware@umich.edu source for original recipe: University of Michigan
Recipe: (Percent, Batch)
Nepheline syenite 35.0 35.00 Wollastonite 12.0 12.00 Lithium carbonate 2.7 2.70 Zinc oxide 5.8 5.80 Strontium carbonate 10.7 10.70 EPK 17.4 17.40 Silica 16.4 16.40 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax Plus 5.0 5.00
Comments:
texture - sea shell kind of texture with pattern when reflected by light. with 5% zircopax, white. add colorants like mason stain or whatever oxide you want to create what color you want. when you fired this, you can apply it thick. submitted by: yee vian shin aka Frankie Yeevia e-mail: yeevi2@acc.wuacc.edu
Recipe: (Percent, Batch)
Cornwall Stone 49.2 49.20 Kentucky OM #4 23.0 23.00 Talc 7.3 7.30 Whiting 7.7 7.70 Barium carbonate 12.8 12.80 ----- -------- Totals: 100.0 100.00
Comments:
I'm not taking responsibility for anyone using these glazes, etc. Something is probably toxic. They are examples of my research and they work out in formulation. Which is what they are examples of. So go formulate your own non-toxic glazes, if that is possible. It's probably bad for the environment too. Email me with questions as to household performance, as that may be indicative of other problems. The badly crazed surfaces are not considered to be a continous-non porous sanitary surfaces. Eric Hansen, Lawrence, Kansas wabi_sabi@mailexcite.com
Recipe: (Percent, Batch)
Spodumene 12.6 12.60 Nepheline syenite 30.0 30.00 Whiting 11.4 11.40 Flint 27.5 27.50 Gerstley borate 8.9 8.90 Dolomite 5.7 5.70 Zinc oxide 4.0 4.00 ----- -------- Totals: 100.0 100.10
Also add:
Bentonite 1.5 1.50 Zircopax 10.2 10.20
Comments:
For Pat Chesney- I use a gloss white glaze that it supposed to mature at cone 4 -8. I fire it to 6-7, so I haven't personally tested it at 4. I got the recipe from Eastern Ill. Univ. Hope this helps. from rebecca mott
Recipe: (Percent, Batch)
Cornwall Stone 47.0 47.00 Gerstley borate 47.0 47.00 Ball clay 6.0 6.00 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 5.0 5.00
Comments:
Glaze Type: Ca Na B. Firing type: Ox or Red. From Val Cushing. VC ed
Recipe: (Percent, Batch)
Cornwall Stone 50.0 50.00 Ball clay 12.0 12.00 Dolomite 20.0 20.00 Bone ash 10.0 10.00 Lithium carbonate 8.0 8.00 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 4.0 4.00 Zircopax 4.0 4.00
Comments:
From Shannon Nelson. Variations -- Can substitute titanium dioxide for less creamy, whiter glaze.
Recipe: (Percent, Batch)
Nepheline syenite 25.9 25.90 Whiting 8.6 8.60 Strontium carbonate 5.2 5.20 Zinc oxide 6.9 6.90 Talc theoretical 3.4 3.40 Ball clay 12.9 12.90 Silica 24.1 24.10 Frit 3134 12.9 12.90 ----- -------- Totals: 100.0 99.90
Also add:
Tin oxide 5.2 5.20 Bentonite 2.6 2.60
Comments:
From Matt Nolen. White, majolica-like
Recipe: (Percent, Batch)
Kona F-4 feldspar 46.3 46.30 Cornwall Stone 46.3 46.30 Wollastonite 1.2 1.20 Barium carbonate 3.8 3.80 Zinc oxide 2.5 2.50 ----- -------- Totals: 100.0 100.10
Comments:
Eric Hansen, Lawrence, Kansas wabi_sabi@mailexcite.com
Recipe: (Percent, Batch)
Custer feldspar 63.4 64.00 Whiting 17.8 18.00 Zinc oxide 5.0 5.00 Talc 5.0 5.00 EPK 8.9 9.00 ----- -------- Totals: 100.0 101.00
Also add:
Zircopax Plus 9.9 10.00
Comments:
Recipe: (Percent, Batch)
Custer feldspar 63.4 64.00 Whiting 17.8 18.00 Zinc oxide 5.0 5.00 Talc 5.0 5.00 EPK 8.9 9.00 ----- -------- Totals: 100.0 101.00
Also add:
Zircopax 9.9 10.00
Comments:
Recipe: (Percent, Batch)
Cornwall Stone 12.5 12.50 Spodumene 12.5 12.50 Barium carbonate 12.5 12.50 Dolomite 12.5 12.50 Talc theoretical 12.5 12.50 Zinc oxide 12.5 12.50 Kaolin 12.5 12.50 Flint 12.5 12.50 ----- -------- Totals: 100.0 100.00
Comments:
From a University of Georgia class handout on glaze & clay from Andy Nasisse. (Ever wonder if you could make a glaze with equal parts of everything? RB)
Recipe: (Percent, Batch)
Nepheline syenite 38.7 38.70 Wollastonite 15.2 15.20 Barium carbonate 15.2 15.20 Silica 10.5 10.50 EPK 10.2 10.20 Gerstley borate 10.2 10.20 ----- -------- Totals: 100.0 100.00
Comments:
kiln type: gas very white in oxidation, duller in reduction submitted by: John Anthony e-mail: JTRAX@AOL.COM
Recipe: (Percent, Batch)
Nepheline syenite 53.7 53.80 Barium carbonate 8.6 8.60 Gerstley borate 10.8 10.80 Lithium carbonate 5.4 5.40 Cryolite 5.4 5.40 Zinc oxide 2.2 2.20 EPK 10.8 10.80 Flint 3.2 3.20 ----- -------- Totals: 100.0 100.20
Also add:
Tin oxide 2.2 2.20 Zircopax 5.4 5.40
Comments:
Over a dark firing clay it breaks a rusty brown. Lovely combination of white against orange brown. All this in oxidation. Chemically this glaze appears to be bordering on the shino type. TD Glaze Type: Na Li MidRoad Shino. Opacity: . Firing type: Ox or Red .
Recipe: (Percent, Batch)
Custer feldspar 50.0 50.00 Zinc oxide 10.8 10.80 Whiting 18.6 18.60 EPK 14.7 14.70 Silica 5.9 5.90 ----- -------- Totals: 100.0 100.00
Also add:
Rutile 3.0 3.00 Cobalt carbonate 2.5 2.50
Comments:
An interesting combination of army green/dark blue. The recipe was given to me by a friend and is called White Opaque. She said to add 2.5% cobalt for a great shiny dark blue. or LEAVE OUT THE RUTILE FOR A SHINY DARK BLUE The only thing she forgot to tell me was to leave out the rutile. I now know that Rutile makes cobalt go green as the result was a glaze that went a dingy army green on my light clay (Standard 112), but on the Standard 266 dark brown it was dark blue in the background with a diffuse green overcast, almost like a tiny green crystal pattern, very attractive. submitted by: Julia Moore e-mail: DIRTYBIRD5@AOL.COM
Recipe: (Percent, Batch)
A.P. Green fireclay 70.0 70.00 Cedar Heights Goldart 20.0 20.00 Ball clay 10.0 10.00 ----- -------- Totals: 100.0 100.00
Comments:
I've applied them to bone dry sculptural work, bisqued them and then have rubbed stains or oxides into the recesses, sponging off, then fired again for permanence. They are quite versatile. These recipes are from Zakin's book on Electric Kiln Ceramics. Some of the clays used in the recipe are coarse and the slip should not be strined. The result will be a coarse, sandy-textured surface, not for functional pieces. They may be applied by dipping, spraying or brushing. They may be applied to greenware or bisqued ware. They may be used alone or with stains and glazes. The appearance when fired is soft and sandy. Candice Roeder
Recipe: (Percent, Batch)
Gerstley borate 15.7 15.70 Talc 8.6 8.60 Whiting 12.0 12.00 Custer feldspar 43.0 43.00 EPK 8.6 8.60 Flint 12.1 12.10 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 8.1 8.10
Comments:
There's a White that i tested from Ceramics Monthly Answers to Potters Questions. I have done tests with it but haven't used it yet on anything major. It appeared to be something I would like. I want to work more with it when I get the time. Cheryl Fisher Sarasota, FL cfisher995@aol.com
Recipe: (Percent, Batch)
Kona F-4 feldspar 60.2 60.20 Flint 5.8 5.80 Whiting 18.2 18.20 Zinc oxide 10.0 10.00 EPK 5.8 5.80 ----- -------- Totals: 100.0 100.00
Also add:
Opax 4.0 4.00
Comments:
From a University of Georgia class handout on glaze & clay from Andy Nasisse. A variation on L.A. Matt.
Recipe: (Percent, Batch)
Lepidolite 15.0 1200.00 Oxford spar 50.0 4000.00 Calcined kaolin 10.0 800.00 Whiting 15.0 1200.00 Flint 10.0 800.00 ----- -------- Totals: 100.0 8000.00
Comments:
Satin, silky smooth semi opaque white. (doubtful) 5/9/61 Glaze Type: Ca Li. Opacity: Semi-Opaque. Firing type: Oxidation .
Recipe: (Percent, Batch)
Kaolin 36.4 36.40 Frit 5301 54.5 54.50 Zinc oxide 9.1 9.10 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 2.7 2.70
Comments:
From a University of Georgia class handout on glaze & clay from Andy Nasisse. Can be used on greenware.
Recipe: (Percent, Batch)
Kona F-4 feldspar 55.0 55.00 Gerstley borate 10.0 10.00 Whiting 8.0 8.00 EPK 6.0 6.00 Silica 6.0 6.00 Superpax 15.0 15.00 ----- -------- Totals: 100.0 100.00
Comments:
^6 in sitter- average bend; on buff stoneware; no soaking. a lttle dry where thin. nice rich white where thick. looks like it almost started to crawl wher thickest. good fit.overglazes look real good wher thin, but seperate wher base is thicker, probably because of ball clay in o.g. s . submitted by: Ed Brownlee e-mail: edware@umich.edu
Recipe: (Percent, Batch)
Kona F-4 feldspar 64.6 64.70 Gerstley borate 11.8 11.80 Whiting 9.4 9.40 EPK 7.1 7.10 Silica 7.1 7.10 ----- -------- Totals: 100.0 100.10
Also add:
Superpax 17.7 17.70 Bentonite 3.5 3.50
Comments:
This is a studio glaze at u of m. I think it could be improved upon. It crawls a little when applied very thick,- its name is SUPER WHITE. i was just in the process of looking for other glazes to test, so let me know if you have any, thanks submitted by: Ed Brownlee e-mail: edware@umich.edu source for original recipe: University of Michigan
Recipe: (Percent, Batch)
Gerstley borate 21.3 21.30 Custer feldspar 14.5 14.50 Frit 3134 14.9 14.90 Spodumene 11.0 11.00 Kaolin 17.0 17.00 Flint 21.3 21.30 ----- -------- Totals: 100.0 100.00
Also add:
Zircopax 14.0 14.00
Comments:
From Magda Gluszek. Original recipe was 7 tin in place of zircopax.
Recipe: (Percent, Batch)
Custer feldspar 43.0 43.00 Gerstley borate 15.7 15.70 Flint 12.1 12.10 Whiting 12.0 12.00 Talc 8.6 8.60 EPK 8.6 8.60 ----- -------- Totals: 100.0 100.00
Comments:
I use it in reduction but I have had some luck with it in oxidation too. Sarah Barnes
Recipe: (Percent, Batch)
Feldspar 34.5 34.50 Gerstley borate 11.5 11.50 Zinc oxide 11.5 11.50 Dolomite 17.2 17.20 Flint 25.3 25.30 ----- -------- Totals: 100.0 100.00
Comments:
Nice white, get pastel colors when adding cobalt or copper carb. Slips show through very nicely. sue hintz
Recipe: (Percent, Batch)
Ferro frit 3195 46.0 230.00 Whiting 34.0 170.00 EPK 20.0 100.00 ----- -------- Totals: 100.0 500.00
Comments:
> ClayArt Listserv recipe < If you find this glaze useful, please consider submitting it to the GlazeBase project with full documentation. Use one of the GlazeBase submission formats available on the CeramicsWeb web page. comments: hi. I have a recipe for a fake wood ash at cone 6 oxidation. It does run in those rivulets. I added 3% copper carbonate but I am sure some other colorants would be worth a try. submitted by: Suzanne Fuqua e-mail: Suzanne511@aol.com
Recipe: (Percent, Batch)
Nepheline syenite 34.9 34.95 Wollastonite 12.0 12.04 Lithium carbonate 2.6 2.65 Zinc oxide 5.8 5.84 Strontium carbonate 10.7 10.68 EPK 17.4 17.43 Silica 16.4 16.42 ----- -------- Totals: 100.0 100.01
Comments:
texture - sea shell kind of texture with pattern when reflected by light. with 5% zircopax, white. add colorants like mason stain or whatever oxide you want to create what color you want. when you fired this, you can apply it thick. submitted by: yee vian shin aka Frankie Yeevia e-mail: yeevi2@acc.wuacc.edu
Recipe: (Percent, Batch)
Kaolin 30.0 30.00 Frit 5301 70.0 70.00 ----- -------- Totals: 100.0 100.00
Also add:
Bentonite 3.0 3.00 Vanadium stain 10.0 10.00
Comments:
From a University of Georgia class handout on glaze & clay from Andy Nasisse.
Recipe: (Percent, Batch)
Albany slip 60.0 60.00 Frit 5301 40.0 40.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 2.0 2.00
Comments:
From a University of Georgia class handout on glaze & clay from Andy Nasisse.
Recipe: (Percent, Batch)
Kaolin 31.5 29.00 Frit 3110 28.3 26.00 Zinc oxide 18.5 17.00 Flint 17.4 16.00 Lithium carbonate 4.3 4.00 ----- -------- Totals: 100.0 92.00
Also add:
Red iron oxide 4.3 4.00 Tin oxide 4.3 4.00 Yellow ochre 0.5 0.50 Copper carbonate 0.4 0.40
Comments:
from Mary Barranger
Recipe: (Percent, Batch)
Wood ash 66.7 66.67 Custer feldspar 33.3 33.33 ----- -------- Totals: 100.0 100.00
Also add:
Yellow ochre 33.3 33.33
Comments:
comments: Seems to be better on porcelain. Some- times bright yellow, sometimes browner depends on mineral content of the ash which varies from wood to wood. Darker and more opaque where thin goes to almost black. Yellow where thicker. Keep glaze thin or you will be scraping shelves. Becomes transparent yellowish brown and very fluid when thickly applied. The mid way thin/thick of application is mottled like a salt fired piece and is satin matte. But I got great reds, yellows, browns, blacks on pieces where it's thinner. To make tiny rivers of ash I make the same glaze substituting Red Art for the Ochre and trail it on with a slip trail bulb. Caution: use rubber gloves with unwashed ash glazes or face the possibility of contact dermatitis. It will mildly burn the skin. I keep Cornhuskers lotion and Hydrocortisone cream around the house anyway. I layer it with a glossy, glassy glaze that by itself has its own problems like keeping me up at night to the sound of loudly cooling and crazing *pings* I use a glaze with wood ash. I don't wash the ash, but I do screen it. The woodash has to be soft, white, fluffy. Not from a wood kiln! That kind is sintered and won't get the best results. You can tell it will feel crispy at first. I'm not taking responsibility for anyone using these glazes, etc. Something is probably toxic. They are examples of my research and they work out in formulation. Which is what they are examples of. So go formulate your own non-toxic glazes, if that is possible. It's probably bad for the environment too. Email me with questions as to household performance, as that may be indicative of other problems. The badly crazed surfaces are not considered to be a continous-non porous sanitary surfaces. Eric Hansen, Lawrence, Kansas wabi_sabi@mailexcite.com
Recipe: (Percent, Batch)
Nepheline syenite 42.5 42.51 Strontium carbonate 23.9 23.93 Dolomite 15.5 15.45 Silica 9.1 9.05 Kaolin 9.1 9.05 ----- -------- Totals: 100.0 99.99
Also add:
Zircopax 19.3 19.28 Red iron oxide 3.6 3.58 Bentonite 4.8 4.77 Epsom salts 1.2 1.19
Comments:
kiln type: gas nice deep yellow with brown spotting over iron bearing clay when thin. Waxier and paler when thick. submitted by: John Anthony e-mail: JTRAX@AOL.COM
Recipe: (Percent, Batch)
Nepheline syenite 25.0 25.00 G-200 feldspar 21.7 21.70 Whiting 20.0 20.00 EPK 16.7 16.70 Frit 3124 16.7 16.70 ----- -------- Totals: 100.0 100.10
Comments:
From Chandra DeBuse
Recipe: (Percent, Batch)
Custer feldspar 56.4 56.50 Whiting 18.6 18.60 Kaolin - theoretical 0.8 0.80 Frit 3124 15.5 15.50 Alumina hydrate 8.7 8.70 ----- -------- Totals: 100.0 100.10
Comments:
From Chandra DeBuse
Recipe: (Percent, Batch)
Nepheline syenite 37.8 37.80 Whiting 19.4 19.40 Kaolin - theoretical 18.1 18.10 Frit 3134 9.2 9.20 Silica 15.6 15.60 ----- -------- Totals: 100.0 100.10
Comments:
From Chandra DeBuse
Recipe: (Percent, Batch)
Nepheline syenite 33.6 33.60 Spodumene - theoretical 6.7 6.70 Whiting 21.1 21.10 Kaolin - theoretical 20.2 20.20 Frit 3134 10.0 10.00 Silica 8.4 8.40 ----- -------- Totals: 100.0 100.00
Comments:
From Chandra DeBuse
Recipe: (Percent, Batch)
Nepheline syenite 40.0 40.00 Dolomite 18.0 18.00 Silica 18.0 18.00 Kaolin 12.0 12.00 Bone ash 6.0 6.00 Lithium carbonate 2.0 2.00 Zinc oxide 4.0 4.00 ----- -------- Totals: 100.0 100.00
Also add:
Copper carbonate 2.0 2.00
Comments:
THIS IS A DARK BLUE GLAZE, NICE TEXTURE, WORKS WELL THIN. SEMI-MATT. IF THICK THEN IT'S GLOSS AND REALLY BLUE (should sell like crazy...) submitted by: Sharon LaRocca-Miranda e-mail: FMIRANDA@alpha.CC.OBERLIN.EDU , FMiranda@oberlin.edu source for original recipe: Zakin