Blue-Green / Copper Red Glaze (Cone 6, oxidation or reduction)
Talc . . . . . . . . . . . . . . . . . . . . . . . . 3 .30%
Whiting . . . . . . . . . 14.29
Frit 3134 (Ferro) . . . 13.33
Kona F-4 Feldspar . 46.16
Edgar Plastic Kaolin Flint . . . . 6.40
Flint ..................................16.52
Add: Tin Oxide . . . . 2.24
Zinc Oxide................4.37
Black Copper Oxide . . . . . . . . .1 .07%
Covering with clear glaze helps reduce burning out of red .
From Rick Malmgren, Ceramics Monthly, October 2000
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