neilestrick 3,710 Report post Posted August 26, 2013 Keep these shelves away from your salt kiln as Flint/silica is a glass former. TJR. Yes, silica is a glass former. But in a salt kiln, silica by itself will not flux out. It requires the presence of alumina and the resulting eutectic of silica/alumina/soda in order for any glass to form. So yes, you are correct that your kiln wash formula won't work in a salt kiln, but not because of the silica alone. Quote Share this post Link to post Share on other sites
