Thread: Color bubbles
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Old 11-06-2017, 04:14 AM
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Originally Posted by Pete VanderLaan View Post
Mark talked about cad/sel reds in fluorine that started off compatible in his work and by the time he was done, they were no longer compatible. The effects of heating and cooling repeatedly in a glass does often change them. While John is really cautious about using Hagy seals to determine mismatch, those efforts can sometimes be defeated. The description of the black makes me think of those circumstances.
This is why I never use cad/sel colors in murrine. Too many heat cycles blows the fit. I got this tip from John C a decade ago.
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