Maybe that's my problem. I'm using glass with the same COE but I'm firing in a glass kiln. Maybe I need to come down on the heat since the heating source is from the lid of the kiln and the sides. I give it a shot and see what happens.
I've also been toying with the idea of dropping onto duraboard and not the kiln shelf. Have you ever tried to do that?
pot melt
Maybe that's my problem. I'm using glass with the same COE but I'm firing in a glass kiln. Maybe I need to come down on the heat since the heating source is from the lid of the kiln and the sides. I give it a shot and see what happens.
I've also been toying with the idea of dropping onto duraboard and not the kiln shelf. Have you ever tried to do that?