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Old 09-29-2019, 09:36 PM
Patrick Casanova Patrick Casanova is offline
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I'd suggest that next time you blow, throw the pieces in the oven, bring it up a little slower than normal and up to the higher end of your normal temperature range. Let it soak while you work and re-anneal them. So now you know annealing is not an issue. Then take some butter cut or masking material and cover some areas. (Inside surface) Then cut out stars and lightning bolts over each color. Then lightly sandblast through the color layer exposing the clear. After cleaning it up start inspecting it from the outside surface under a good light. If you have a compatibility problem you'll see hairline cracks off the points and tight valleys. It's Old School but it's how we used to test the changing cutlets against our colors before the smart kids came along.
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