I have some turquoise nuggets that I need to drill. Drilling
turquoise shouldn't require an ultrasonic drill. I'm thinking of a
miniature hammer drill similar to it's big brother used to drill
concrete. Anyone know if such a device exists or should I add it
to my never ending project list?
Depending on how many nuggets you have, I have drilled holes in
turquoise by dipping the nugget in water and just using the water on
the surface with any diamond bit, best is diamond triple ripple bit,
going slow, dip stone repeatedly about every 3 seconds to clean out
debris. Start hole with bit at 45 degrees. Regular drill press works
fine, just vary pressure, press down, back off, press down, back off
to allow water to clean debris from bit and hole. Use piece of wood
under rock both just under water. Slow, light touch.