Thread: Phosphate Opal
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Old 12-03-2006, 11:02 AM
Pete VanderLaan's Avatar
Pete VanderLaan Pete VanderLaan is offline
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Phosphates are not really dense glasses. They can and must be melted hot 2325F or higher. The junk will diminish is you melt hotter but it's almost always a problem in cooler melts.. Screen the phosphate materials. You can go up to 5% phosphate before you will hit a compatibility wall. Borax helps.
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