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Recipe: (Percent, Batch)
Custer feldspar 59.00 59.00 Whiting 9.00 9.00 Kaolin 9.00 9.00 Flint 7.40 7.40 Dolomite 4.60 4.60 Rutile 5.50 5.50 Red iron oxide 5.50 5.50 -------- -------- Totals: 100.00 100.00Comments:
tan satin opaque
Recipe: (Percent, Batch)
Custer feldspar 22.44 21.70 Whiting 20.68 20.00 Zinc oxide 6.93 6.70 Kaolin 10.34 10.00 Flint 20.68 20.00 Zircopax 8.58 8.30 Gerstley borate 5.17 5.00 Copper carbonate 5.17 5.00 -------- -------- Totals: 100.00 96.70Comments:
Recipe: (Percent, Batch)
Custer feldspar 22.08 22.08 Whiting 20.35 20.35 Zinc oxide 6.82 6.82 Kaolin 10.17 10.17 Flint 20.35 20.35 Copper carbonate 3.36 3.36 Cobalt carbonate 3.36 3.36 Rutile 3.36 3.36 Superpax 5.09 5.09 Gerstley borate 5.09 5.09 -------- -------- Totals: 100.00 100.00Comments:
Recipe: (Percent, Batch)
Custer feldspar 21.20 21.20 Whiting 19.40 19.40 Zinc oxide 6.50 6.50 Kaolin 9.70 9.70 Flint 19.40 19.40 Zircopax 16.20 16.20 Spodumene 4.90 4.90 Copper carbonate 1.10 1.10 Cobalt carbonate 0.50 0.50 Rutile 1.10 1.10 -------- -------- Totals: 100.00 100.00Comments:
magic base with additions
Recipe: (Percent, Batch)
Custer feldspar 21.77 21.77 Whiting 10.98 10.98 Zinc oxide 15.62 15.62 Kaolin 7.10 7.10 Flint 15.62 15.62 Superpax 7.86 7.86 Spodumene 2.37 2.37 Copper carbonate 1.04 1.04 Cobalt carbonate 0.51 0.51 Rutile 1.04 1.04 Frit P25 14.20 14.20 Titanium dioxide 1.89 1.89 -------- -------- Totals: 100.00 100.00Comments:
Recipe: (Percent, Batch)
Frit P25 28.80 28.80 Zinc oxide 25.65 25.65 Flint 13.09 13.09 Custer feldspar 23.04 23.04 Whiting 3.14 3.14 Copper carbonate 1.05 1.05 Rutile 1.05 1.05 Kaolin 2.62 2.62 Titanium dioxide 1.05 1.05 -------- -------- Totals: 100.00 100.00Comments: This is a runny true crystalline glaze. Clean 1/2 inch up the side of the pot, (better yet wax it to get an even line). Fire test on potsherd or well washed shelf. P25 frit is available from Minn Clay co.
Recipe: (Percent, Batch)
Frit P25 14.44 14.44 Zinc oxide 14.74 14.74 Flint 23.06 23.06 Custer feldspar 31.58 31.59 Whiting 9.02 9.02 Copper carbonate 0.52 0.53 Cobalt carbonate 0.26 0.26 Rutile 0.52 0.53 Kaolin 3.81 3.81 Titanium dioxide 0.52 0.53 Dolomite 1.50 1.50 -------- -------- Totals: 100.00 100.00Comments:
Recipe: (Percent, Batch)
Custer feldspar 36.09 36.09 Whiting 17.61 17.61 Zinc oxide 3.37 3.37 Kaolin 14.09 14.09 Flint 20.13 20.13 Superpax 4.18 4.18 Copper carbonate 4.03 4.03 Red iron oxide 0.50 0.50 -------- -------- Totals: 100.00 100.00Comments:
Recipe: (Percent, Batch)
Custer feldspar 25.12 25.12 Whiting 23.15 23.15 Zinc oxide 7.76 7.76 Flint 23.15 23.15 Kaolin 11.57 11.57 Copper carbonate 5.79 5.79 Rutile 3.47 3.47 -------- -------- Totals: 100.00 100.00Comments:
Recipe: (Percent, Batch)
Dolomite 9.40 9.40 Whiting 14.80 14.80 Custer feldspar 40.70 40.70 Kaolin 11.90 11.90 Flint 16.80 16.80 Copper carbonate 2.00 2.00 Zinc oxide 4.40 4.40 -------- -------- Totals: 100.00 100.00Comments:
Recipe: (Percent, Batch)
Dolomite 15.83 16.50 Whiting 1.44 1.50 Custer feldspar 33.11 34.50 EPK 14.40 15.00 Flint 10.08 10.50 Copper carbonate 3.07 3.20 Spodumene 6.72 7.00 Gerstley borate 5.76 6.00 Zircopax 9.60 10.00 -------- -------- Totals: 100.00 104.20Comments: low coefficient of expansion (less likely to craze)
Recipe: (Percent, Batch)
Custer feldspar 40.20 40.20 Flint 12.00 12.00 Whiting 4.30 4.30 Dolomite 9.10 9.10 Gerstley borate 9.30 9.30 Zinc oxide 1.40 1.40 Copper carbonate 4.50 4.50 Spodumene 6.70 6.70 Kaolin 2.90 2.90 Zircopax 9.60 9.60 -------- -------- Totals: 100.00 100.00Comments:
Recipe: (Percent, Batch)
Custer feldspar 41.10 41.10 Flint 12.30 12.30 Whiting 4.40 4.40 Dolomite 9.30 9.30 Gerstley borate 8.60 8.60 Copper carbonate 4.70 4.70 Kaolin 2.90 2.90 Spodumene 6.90 6.90 Zircopax 9.80 9.80 -------- -------- Totals: 100.00 100.00Comments:
iron looks rusty under this glaze, cobalt cooler hues
Recipe: (Percent, Batch)
Custer feldspar 28.37 28.37 Zinc oxide 19.58 19.58 Whiting 8.54 8.54 Kaolin 13.10 13.10 Copper carbonate 2.74 2.74 Cobalt carbonate 0.32 0.32 Rutile 1.14 1.14 Gerstley borate 3.26 3.26 Frit P25 17.48 17.48 Flint 5.48 5.48 -------- -------- Totals: 100.00 100.00Comments:
Good green over white glaze
Recipe: (Percent, Batch)
Custer feldspar 28.20 28.20 Zinc oxide 19.40 19.40 Whiting 8.50 8.50 Kaolin 13.00 13.00 Copper carbonate 2.70 2.70 Cobalt carbonate 0.70 0.70 Rutile 1.30 1.30 Gerstley borate 3.30 3.30 Frit P25 17.50 17.50 Flint 5.40 5.40 -------- -------- Totals: 100.00 100.00Comments:leave a clear space at bottom of pot. Nice variation from the rutile
Recipe: (Percent, Batch)
Custer feldspar 21.67 21.67 Dolomite 25.83 25.83 Kaolin 25.83 25.83 Whiting 12.50 12.50 Flint 5.83 5.83 Frit P25 8.33 8.33 -------- -------- Totals: 100.00 100.00Comments: Use thin, good over iron slips
Recipe: (Percent, Batch)
Custer feldspar 23.42 23.42 Dolomite 23.42 23.42 Kaolin 23.42 23.42 Whiting 13.51 13.51 Frit P25 13.51 13.51 Bentonite 2.70 2.70 -------- -------- Totals: 100.00 100.00Comments: use thin, good over iron slips
Recipe: (Percent, Batch)
Custer feldspar 36.67 375.00 Dolomite 11.10 113.50 Whiting 8.61 88.00 Kaolin 13.55 138.50 Flint 25.92 265.00 Zinc oxide 1.96 20.00 Red iron oxide 1.96 20.00 Chromium oxide 0.24 2.50 -------- -------- Totals: 100.00 1022.50Comments:
Recipe: (Percent, Batch)
Custer feldspar 33.68 35.37 Dolomite 5.47 5.74 Whiting 7.66 8.04 Kaolin 8.09 8.50 Flint 26.82 28.17 Zinc oxide 7.26 7.62 Frit P25 6.26 6.57 Nickel carbonate 4.76 5.00 -------- -------- Totals: 100.00 105.00Comments:
Recipe: (Percent, Batch)
Custer feldspar 33.68 33.68 Dolomite 5.47 5.47 Whiting 7.66 7.66 Kaolin 8.09 8.09 Flint 26.82 26.82 Zinc oxide 7.26 7.26 Frit P25 6.26 6.26 Chromium oxide 2.38 2.38 Nickel carbonate 2.38 2.38 -------- -------- Totals: 100.00 100.00Comments:
opaque. Cobalt under turns greenish
Recipe: (Percent, Batch)
Custer feldspar 33.68 33.68 Dolomite 5.47 5.47 Whiting 7.66 7.66 Kaolin 8.09 8.09 Flint 26.82 26.82 Zinc oxide 7.26 7.26 Frit P25 6.26 6.26 Nickel carbonate 4.76 4.76 -------- -------- Totals: 100.00 100.00Comments:
makes iron under look purple. Could try adding a bit of iron to glaze. doesn't appear to craze
Recipe: (Percent, Batch)
Custer feldspar 22.50 22.50 Kaolin 17.08 17.08 Wollastonite 19.58 19.58 Flint 22.08 22.08 Zinc oxide 8.33 8.33 Zircopax 10.42 10.42 -------- -------- Totals: 100.00 99.99Comments:
No craze, good white base (4/97), I increased the zinc over limit to improve cobalt engobe color.
Recipe: (Percent, Batch)
Custer feldspar 34.20 34.24 Kaolin 11.40 11.41 Wollastonite 9.83 9.84 Flint 22.37 22.39 Zinc oxide 4.18 4.19 Zircopax 5.23 5.24 Whiting 8.46 8.47 Dolomite 3.95 3.96 Cobalt carbonate 0.28 0.28 Black cobalt oxide 0.10 0.10 -------- -------- Totals: 100.00 100.10Comments:
Recipe: (Percent, Batch)
Custer feldspar 34.68 34.68 Kaolin 12.52 12.52 Wollastonite 9.36 9.37 Flint 21.43 21.43 Zinc oxide 3.98 3.98 Zircopax 4.98 4.98 Dolomite 4.35 4.35 Bone ash 4.35 4.35 Red iron oxide 4.35 4.35 -------- -------- Totals: 100.00 100.00Comments:
no craze, smooth gloss glaze
Recipe: (Percent, Batch)
Potash feldspar 38.92 38.92 Silica 28.02 28.02 Kaolin 10.06 10.06 Dolomite 4.55 4.55 Bone ash 4.55 4.55 Whiting 13.91 13.91 -------- -------- Totals: 100.00 100.00Also add:
Red iron oxide 4.55 4.55 Cobalt carbonate 1.00 1.00 Copper carbonate 0.55 0.55Comments:
Recipe: (Percent, Batch)
Custer feldspar 21.68 21.70 Zinc oxide 6.69 6.70 Whiting 19.98 20.00 Kaolin 9.99 10.00 Flint 19.98 20.00 Superpax 16.68 16.70 Spodumene 5.00 5.00 -------- -------- Totals: 100.00 100.10Comments: Really nice over cobalt slips, has been my basic white for many years. Have used zircopax, superpax, ultrox all successfully as opacifiers.
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