Quote Originally Posted by the great waldo View Post
Just out of interest does anyone on the forum any experience of drilling granite? I want to drill a few 12 mm holes through the slabs which are 25 cm wide. I've got a pneumatic hammer drill.
Whatever you do, don't turn hammer on it will crack it like Eggshell. While it seems rock hard Granite actually fractures very easily if handled wrong.
Ideally, you need a Slow speed Drill with high torque and like been suggested PCD Core bit and lots n lots of clean water. Do not try cutting without Water with PCD otherwise, they just fail quickly.