Thread: Calcedony Prep
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Old 08-03-2017, 02:01 PM
Dan Vanantwerp Dan Vanantwerp is offline
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Jim called and sounded interested in batching your formula. He wanted me to pass on my furnace specs. It's a wire melter and he is concerned about melting batch in it..specifically if it required higher temps. Funny, I was just reading the Antiques and Classics thread on this issue the other day. I do recall that you like to melt calcedony at a lower temp (2180, I believe) which my furnace can easily handle. Would this also be the case with the potassium glass?

Sounds very doable to me. I'll only be doing small batches in a 17lb crucible. The furnace is made to keep the majority of the crucible contents away from the elements. I can live with some loss of element life if the colors blow me away.
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My furnace setting: 2112
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