New answers tagged drill
Drill a smaller radius hole first, with its edge just kissing the inner edge of the hole you care about, then make your larger diameter cut. The cut should go a bit faster now since you have a clearance hole for chips, and it gives you a way to grab the circle left in your saw.
No hole-saw kit is complete without a plug remover: Might find them at Home Depot or the like. They work well for rough cut, but the finer the teeth, the tighter its going to be stuck in there. Reaming a few times before you punch through helps.
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