Hello all, I am a beginner and I have a problem. I have been trying with several glaze formulas. The commercial glaze (tin added) that I have now is beautiful. I fire at about 1050 C. Problem is the cobalt blue (Delft style) lines I want to paint. Lines have round craters as if the cobalt splatters a little or pops open whem melting. I have used several percentages between 2 and 8% of cobalt to paint. My paint: 100% clear glaze+8%cobalt oxide+a few drops glycerine+a few drops water. I paint on top of the dried unfired tiles glaze and fire the tile. What is the problem????? can anybody give me a good paint recipe????? Thanks, Nina
- posted
19 years ago