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This is also the main reason why you don't grind an 8" diameter hollow with an 8" diameter wheel. You'll create an enormous surface area that is in touch with the belt, leading to extremely fast heat...

And lots of dunking in cold water. Grind a couple of seconds, dunk. Grind a couple of seconds, dunk. Etc...
Near the spine or the tang you have a bit more margin, but near the edge you gotta dunk...

Ditto for me.