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Tips, Techniques, and Questions -- Technical questions or tips

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  #1  
Old 2014-08-21, 1:01pm
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Default PMC on a torch

I read that you can torch-fire some kinds of PMC (Precious Metal Clay), but someone told me that it's very brittle.

Anybody done it? I'm thinking applying uncured clay to a bead in progress and heat them both at once...
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Old 2014-08-21, 3:17pm
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I have heard the same thing about torch-fired PMC. Wouldn't there be a problem with moisture in the clay applied to a bead?
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Old 2014-08-22, 4:36pm
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I had thought of shaping and drying the PMC before applying to a bead.

I think there would be so little moisture even in undried PMC that it wouldn't harm the bead. Think about glass blowers, they shape with wet newspapers.
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Old 2014-08-22, 5:39pm
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I could be wrong, because I think it was a long time ago I heard this... but the overlay paste is what I think people were firing onto beads. Which may work fine in the flame, because it is very thin like paint.) It may be possible to kiln fire the low fire with glass beads, I haven't tried it. I don't think using the clay it self would work very well because it would give a mighty fume effect with that much of it at that heat.
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Old 2014-08-22, 6:28pm
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Makes me wonder....I have some serious fuglies from my limited days of PMC (shaped and fired). Since it is pure silver, would it be OK to fume with it?
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Old 2014-08-23, 6:33am
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Quote:
Originally Posted by 28676bhe View Post
Makes me wonder....I have some serious fuglies from my limited days of PMC (shaped and fired). Since it is pure silver, would it be OK to fume with it?
Yes. Or you can melt it down and cast it, or do anything with it you would do with fine silver.

For firing onto glass beads, I also think the paste would be the only form I would try. The amount of time it takes to fire the clay, even a small charm, seems excessive for the underlying glass.
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