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Old October 8th, 2008, 06:02 PM
mattathayde's Avatar
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Hookah Master
Join Date: Apr 2008
Location: Richmond/Yorktown VA
Posts: 3,779
Default Re: want to buy a pyrex bowl. "any thoughts?"

its that it was being chilled in one spot, same thing when you work hot glass. also they may not have annealed it correctly thus letting it fracture more easily.

basically when you work glass very thin you dont have to anneal it but while its cooling off if you touch it with a metal tool it will break where you touched it, no questions asked

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