[QUOTE=Steve;479902]Some ideas. Use them all, or whatever you like. I'm sure there are others out there.
Use brand new drills and counterbores, or at least "very sharp" ones. Carbide are best. Bathe it in paint thinner with a solder brush. Back up the "off side" when drilling to help stop "popping out"
Thanks again STEVE, working with turquois / mop scale first time, and using as a spacer on my partial tang.