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1990C4S 1990C4S is offline
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Join Date: Sep 2009
Location: North of You
Posts: 9,160
Drilling Flagstone

I need to drill about fifty 3/4" holes (~2"deep) in my flagstone paver deck. These are the anchor points for my pool cover, they all need to be re-drilled because I had my deck surface redone.

This material is hard, extremely hard. Normal carbide bits barely touch this stuff. Even a 1/4" hole is slow going with my HF 'regular' 1/2" hammer drill. It cuts easily with my diamond saw, but I need to drill, not cut.

I need some way to drill faster, and ideally a bit that can drill all fifty holes. I've looked at diamond coring bits, they get good reviews, but they have a short life. I don't want to burn through twenty drill bits at $30 each.

Soooo, bigger/better drill (e.g. Hilti) and Milwaukee SDS drill bits?

Any other ideas/suggestions?
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Last edited by 1990C4S; 09-16-2024 at 04:30 PM..
Old 09-16-2024, 04:27 PM
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