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I use the optical center punch but I also use carbide drill bits. I get them from Drill City. Look for resharpened carbide bits in lots of 10 or 25. Very good prices and being resharpened they are a bit (pun intended) shorter so somewhat less limber an walk less. Still plenty long enough for PCBs unless you boards are 1/2" thick...hi hi.
73, PJH, N7PXY