Multiple high hest firings

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Doug Zawodny
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Joined: Wed Feb 28, 2007 8:30 pm
Location: Sacramento California

Multiple high hest firings

Post by Doug Zawodny »

Does anyone know if firing multiple times (5-7) at 1600 and higher makes the glass unstable?
Brad Walker
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Re: Multiple high temperature firings

Post by Brad Walker »

It does.

I'd be leery of firing more than once (and twice at the most) at temperatures above 1600F/870C. Incompatibility can result. It's especially likely with whites, with glasses containing aventurine, with glasses containing gold, and with pieces you absolutely don't want it to happen.
Doug Zawodny
Posts: 33
Joined: Wed Feb 28, 2007 8:30 pm
Location: Sacramento California

Re: Multiple high hest firings

Post by Doug Zawodny »

Thanks Brad. That explains my problem.
Kevin Midgley
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Location: Tofino, British Columbia, Canada

Re: Multiple high hest firings

Post by Kevin Midgley »

When Bullseye first started there were some colours that you could fuse but try a second firing and it would break.
Now the description I believe is 3 full fuse firings.
Since fuse firings are nowhere near those temperatures you are way over any chances of stability.
I only fire glass twice for that reason.
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