Quote:
Originally Posted by efoote868
I'd say it stops being a sheet when you can no longer bend it with a normal shop setup.
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I can bend 1/4" relatively easily in my press, I can bend thicker metal too, but not in very useful ways.
Even if wiki is not always right (that was a little joke) I would say 1/8" is definitely sheet metal, and 3/8" is definitely not sheet metal. So it's somewhere around 1/4" thick that it changes.