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High temp release for casting glass.? Answered

I cast in glass (1750 F.), I currently use yogurt containers as the mold walls (I am currently limited to casting objects that fit in a cylindar 4" diam. X 3.5"). I usually use pre-made ice cube molds into which I pour 'composi-mold' for the positive to be cast in high temp mold material for the negative. The limit I have is due to casting in my microwave - the kiln uses magnetite agitated by the microwaves to produce heat. My problem is the unpredictability of my release material; sometimes the piece just drops out and sometimes i have to clean the glass piece - any suggestions on high temp releases?

1 Replies

Paige RussellBest Answer (author)2017-06-13

Hi Zaacharia,

I'm afraid this one is out of my experience scope. The google oracle or maybe some glass casting forums will be your best bet for high temp release info. Sorry I couldn't be more helpful.

Happy hunting!

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