Drill through granite worktop

[firemant]

I used to regularly drill 6mm holes through granite using a standard drill bit. Never did 22mm but would have thought starting small and expanding up would Beno problem.

But avoid hammer

 

[Old Account]

What do you use to guide them through?
Don't want them sliding all over thje worktop

You could either get a guide or make a guide out of wood like ply our something.