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Registered
Join Date: Jul 2001
Location: Lawrenceville GA 30045
Posts: 7,467
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Were the teeth sharp when you finished the hole?
Plywood glues can be brutal on non-carbide teeth. It's likely the heat on the hole saw caused metal expansion which also caused additional binding and even more heat.
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Mark
'83 SC Targa - since 5/5/2001
'06 911 S Aerokit - from 5/2/2016 to 11/14/2018
'11 911 S w/PDK - from 7/2/2021 to ???
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