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Author Topic: Talc fuse, anyone?  (Read 1468 times)
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Moira HFG
Half Full Glass
Forum Member
Posts: 413

Ever the optimist

« on: August 23, 2015, 07:36:55 AM »

I've posted this question on a FB forum, but thought I'd try here too...

I've made and packed a plaster pate de verre mould. It had undercuts in it so I've packed it with talc to stop it collapsing during firing.
My question is - how much to tweak the firing schedule to allow for the heat the talc absorbs. I know it needs a longer time to heat and cool - but how much longer? 20%? double? I can't find anything on Warm Glass or Morganica.

Advice appreciated, otherwise I'll just guess!

Thanks, Moira

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