I have a question about devitrification and I don’t even know if I have it. I am new here and very inexperienced. I am not sure if the proper way to ask another question on this topic is to post a reply or write the author.

my problem is that when I slump a clear glass tray in my mold the horizontal surfaces on the bottom are a bit frosty. I don’t know if this is because of the mold or it is devitrifying. I don’t mind it really, I just wondered if it is a fault that I should correct somehow. The top surface is fine. I am slumping to 1240 f., hold 30 minutes.

Thanks for any thougts,


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