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Old 05-31-2018, 06:16 PM
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Pete VanderLaan Pete VanderLaan is offline
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Join Date: Apr 2002
Location: Chocorua New Hampshire
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Staying away from this: Are you melting any cristalica without additives? What do they look like?

I have always added black tin to a raw batch, never a cullet. What I wanted was a clear that wa receptive to having such materials as Silver bromide to it and in deed it was receptive. Silver flowed on the surface, it never balled up as I would expect in an oxidized clear.
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