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Old 10-31-2012, 01:27 AM
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Default Re: 1/14 CAT 390D LME

I did some research on the plaster of paris and its moisture content. The plaster is calcium sulfate hemihydrate(contains water). So yes molten metal plus water equals mold failure and or a steam explosion but only until it is heated above 392°F, it forms into anhydrite(does not contain water).


First plaster mold with no imperfections.
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