Carole Fox on fri 30 jun 00
Dear Clayart Friends,
Here is a shiny purple cone 10 reduction glaze that I used at the =
University of Delaware. I will post both the original recipe as well as =
what I THINK is the percentage formula. ( I never converted a recipe =
before, so you may want to check my numbers!) This glaze has depth and a =
range of colors from deep purple to red with flecks of gray. I don't =
know a thing about how it fares as far as food-safeness goes, but I sure =
saw a lot of students' functional pieces glazed with this glaze come =
through the firings and have always wondered about leaching.
Barium Carb. 996
gerstly borate 994
c feldspar 9950
tin ox. 200
cobalt carb 48
copper carb 398
Barium carb. 4.98
gerstly borate 4.97
c feldspar 49.75
tin ox. 1
cobalt carb .24
copper carb 1.99
The numbers for the percentages look awfully strange to me. Did I =
calculate them incorrectly?
Happy Glaze Testing!
Carole - in Elkton, MD who tried to make a contribution to the list, but =
then ended up asking a question!