Ingredients

Ingredient Amount
Red Art 60.00
Gerstley Borate 30.00
OM4 Ball Clay 5.00
Silica 5.00
Add Amount
Manganese Dioxide 45.00
Copper Carbonate 5.00

Instructions

Published in "Cone 6 Bronze" by A. Blair Clemo, in the December 2013 issue of Ceramics Monthly.
This glaze is not food safe. When firing manganese dioxide, take extra precaution to avoid breathing kiln fumes, as they will be toxic.