Yes, way too cool. I garage at 948F. The trick with finding a garage temp is that it needs to ba above the strain point, around 830F for Soda Lime (104) and below the point where the glass will flow under it's own weight or due to gravity. I do mostly marbles in the 1.25" to 1.5" range that's why I use 948F, any higher and I risk the marbles deforming under their own weight.
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Roy
Hot glass does not crack.
Unless it is glowing and drippy, hot glass looks like cold glass.
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