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I use a powerful laser I call "Preperation H"
drill from both sides. take needle nose pliers and carefully tear it off, or burn/melt it.
De Walt Cordless, stepping up the size 2 or 3 times till I get the right size hole, then the X-acto knife. Also start on the outside going in and clean the inside edge.
I don't even use a drill .. I use a high Power Green Lazer