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Old 11-08-2019, 12:46 PM
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Pete VanderLaan Pete VanderLaan is offline
The Old Gaffer
 
Join Date: Apr 2002
Location: Chocorua New Hampshire
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Chalcedonias really like potash and really don't like sodium. zinc and black tin are OK silver seems high, iron somwhat low, melt a lot hotter. Neutral flame. Don't add sugar. That glass will be a slight mismatch for SP87

Read the first sentence again.
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