Skip to main content
Learn pottery how you want, when you want with a caring, supportive community. We have hundreds of classes to help you learn all aspects of pottery and ceramics. Wheel throwing, hand building, glazing, firing, surface decoration, and more. Learn to make pottery forms of all kinds like mugs, cups, vases, plates and platters, pitchers, teapots, and decorative ceramic sculpture. We also have live weekly pottery tutorials and exclusive workshops with renowned ceramic artists and teachers.
I'm from Germany, and a few weeks ago, I finally got Jess's cobblestone and two other great glazes, which I ordered. I'm pleased about it.
Now one mug cracked pretty bad. On the inside, I put cobblestone. On the outside, I put three layers of Sea Salt under three layers of Green Tea. I saw the combo on Youtube, and Jess had no problems with this combo. I fired on cone 5.
I thought that the cup could have an issue. So I tried the same combo one more time. The result was the same. The little bowl cracked.
Any ideas about what went wrong?
Guess I can't put pictures in here.
Happy to hear from anyone. :-)
Hi Katherine, I haven't used the cobblestone yet, but there was a kiln opening video not long ago and I think Jess had a mug she used cobblestone on inside and it cracked. It may have been the last kiln opening video or the one before? She was saying something about it not liking the other glaze she layered it with that time. I saw the one where it was fine too...but I'm thinking in the next video she said it cracked. I'll try to find it! Star
so it was the May 17th kiln opening, but it was winter wood with green tea over it with light flux on the the outside and cobblestone on the inside. She thinks it is the green tea. Winter wood I believe, has the same base glaze as Sea salt, but I don't know...it's at 29 minutes if you want to check it out. Star