Marianne Eshleman on sat 21 oct 06
I was wondering if anyone has the recipe for "Copper Grape" Glaze or have
you ever heard of it? What cone is it for? Thanks.
John Britt on sat 21 oct 06
Here is a recipe that is a copper red glaze with cobalt carbonate to make
GRAPE Cone 10 Reduction
Custer Feldspar 49.75
Gerstley Borate 4.97
Barium Carbonate 4.97
Zinc Oxide 2.44
Tin Oxide 1.00
Copper Carbonate 2.00
Cobalt Carbonate 0.30
I have a bunch more in my book in the Purple chapter.
Hope it helps,