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Old 10-03-2019, 11:56 AM
Pete VanderLaan's Avatar
Pete VanderLaan Pete VanderLaan is offline
The Old Gaffer
 
Join Date: Apr 2002
Location: Chocorua New Hampshire
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As a generalization. Gaffer will give the best assurances on fit with a 96. There are issues with some phosphates, particularly containing copper which as an additive to glass has some rather unpredictable results. I make my own when I need it. The Bross formula is really a great place to start. It's not toxic and will teach your classes some pretty useful information, plus you get a good opal.
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