Ingredients

Ingredient Amount
Barium Carbonate 15.60
Gerstley Borate 10.40
Wollastonite 15.60
Nepheline Syenite 39.70
Kaolin 10.40
Silica 8.30
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Black Copper Oxide 3.10

Instructions

Published in "Electric Kiln Success" by Jonathan Kaplan, in the Jan/Feb 2008 issue of Pottery Making Illustrated.