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April 12, 2009 at 6:23 pm #11253
Be careful going slowly between about 1325° F and 1425° F, With most fusible glass devitrification flourishes in this range. A bubbles squeeze can generally be accomplished below 1300° F without the risk of glass scum. In fact, I have recently lowered my squeeze/soak temp to 1225° F with excellent results.
Helios Kiln Glass Studio