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Pro tip: I don't pre-heat my jacks for most offhand work.
The glass responds better to the cooler metal in my experience.
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rubys192d ago
Wait, you let the jack stay completely cold? Even @fiona_jackson33 agreeing has me shook... I tried that once on a simple vase and the temp difference made the glass crack the second it touched. You must be working way thicker than I do.
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