Roberta12 Posted October 5, 2021 Report Share Posted October 5, 2021 As we were on the last batch of glazing for Empty Bowls, I suggested that we use a glaze that I had, Bone, from MC6. And my friend said Oh and what about that lovely brown paired with it. The Temmoku from John Britt's book, Selsor Temmoku. Both of them are really great glazes and I had never thought of pairing them. So we did. I did not throw the bowls, my friend had, but I knew the clay was Laguna Dover. Imagine my surprise when all 4 of the bowls we had glazed that way just spontaneously cracked and broke right before my eyes. They were cool when it happened, not sitting in a breeze. I think it is because there was a great deal of tension between the 2 glazes. But I would love to have everyone's thoughts on this. We also paired the Temmoku with Ravenscrag white. It was simply a lovely combo! No breaking. Roberta Link to comment Share on other sites More sharing options...
Babs Posted October 5, 2021 Report Share Posted October 5, 2021 Wow that is dramatic!! Did thry ping clearly after bisque I wonder. Link to comment Share on other sites More sharing options...
Roberta12 Posted October 5, 2021 Author Report Share Posted October 5, 2021 We glazed almost 300 bowls, made the same way, bisqued to 04, with the same clay, with a variety of glazes. They were the only 4 that did that. The only 4 glazed that particular way. I heard the noise of them popping and I turned to see them break before my eyes. It was an amazing thing! Link to comment Share on other sites More sharing options...
Bill Kielb Posted October 6, 2021 Report Share Posted October 6, 2021 26 minutes ago, Roberta12 said: I heard the noise of them popping and I turned to see them break before my eyes. It was an amazing thing! I think that is very likely the difference in COE was the cause. Looks like a sudden catastrophic material failure not necessarily following a common weakened path to relieve the stress. Nice Empty bowl, bowl BTW. Link to comment Share on other sites More sharing options...
Babs Posted October 6, 2021 Report Share Posted October 6, 2021 Thickbfoot, thin walled adde d to it... Shaped bowl coming from corner too. Glad you only did 4 I'll bet Link to comment Share on other sites More sharing options...
Roberta12 Posted October 6, 2021 Author Report Share Posted October 6, 2021 1 hour ago, Babs said: Thickbfoot, thin walled adde d to it... Shaped bowl coming from corner too. Glad you only did 4 I'll bet That is how that person throws. thick foot, thin walls. And yes, you are absolutely right, so glad we only did 4 that way!!! Link to comment Share on other sites More sharing options...
Callie Beller Diesel Posted October 10, 2021 Report Share Posted October 10, 2021 When it’s only 4 of them like that, it’s easier to get intrigued by the science of it! I’m glad it wasn’t more. Link to comment Share on other sites More sharing options...
Babs Posted October 10, 2021 Report Share Posted October 10, 2021 Same potter, same shapes , different glaze combos, no cracks. Near elements, top middle bottom of kiln , go on , suck us in! Link to comment Share on other sites More sharing options...
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