Thread: Annealing issue
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Old 01-23-2020, 06:34 AM
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Greg Vriethoff Greg Vriethoff is offline
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If I'm not mistaken, you have to increase the anneal soak to remove strain that has been introduced past the strain point (I think Richard already addressed this).

There are far too many variables here, but my hunch is that the breakage that occurred was due to thermal shock. You don't say how long it was at 800 before shutting it down. If the box was still ramping-up, the glass (especially the thick paperweights) probably didn't get much above the actual strain point.

I know if Ed were here he'd set me straight on this.
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