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Old 2012-09-07, 3:07am
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Dragonharper Dragonharper is offline
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Join Date: Jul 02, 2010
Location: North Central PA
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This is just a guess, depending on how big your flame is and it's chemistry. Oxy about 15-20 hours, more or less. Propane, several hundred hours. I run a Bethlehem Bravo and I get about 8-16 hours on a 120 CuFt oxy tank. Propane I don't worry about, I use way more heating my studio than I use to melt glass.
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Hot glass does not crack.
Unless it is glowing and drippy, hot glass looks like cold glass.
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