On Jan 21, 9:38*am, "Pete C." wrote:

snip

Diamond core bit, with water, no hammer, drill from the outside in so
you don't knock the rock loose.

Totally agree. Milwaukee has diamond bits, hole saws, stuff like that.
If you want to go easy on your budget, Harbor Freight has all manner
of diamond products, blades, hole saws, drills. When you get through
the veneer, then break out the brutal tools.

Joe