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Drama Design
 Film and Event Design
Theatre Design

Melting Breakaway Glass.

I tried various methods of melting Beakaway glass.  Flints recommend melting it in one saucepan suspended over another, without water between, rather like a dry bain-marie.  I don’t know the reason for this, but it didn’t work for me, nor for others I’ve asked.  I found that the most efficient way to melt it was simply in a saucepan with a ceramic non-stick surface. Not teflon, it doesn’t like the high temperature.  Keep the temperature very low, and the lid on, until the chunks have all softened, and welded themselves into a thick toffee like mass.

Keep the temperature very low

At this point you can raise the temperature, but keep the lid on between stirs, and keep the sugar thermometer handy.

Raise the temperature at this point.

At 120c the material should become liquid, and at this point the hotter it becomes, the less bubbles there will be.  The manufacturers recommend pouring at 140c, as there is a risk of yellowing if you go hotter, but we found that there were fewer bubbles and that the glass was stronger when we poured at 150c.  Heat the mold before pouring, or the silicone will give off fumes, giving your glass a cloudy appearance.

Cloudy glass from a cold mold

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05 December 2017 Posted By : admin 0 Comments
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