Water for Cutting Masonry
If you have to cut a paving stone or concrete block with an angle grinder, you could cut it dry and get a face full of dust and possibly ruin the blade, but there’s a better way.
Anytime you’re cutting masonry with an angle grinder it’s a good idea lubricate the cut with water. It will cool the blade and keep the dust down. Jack Stuart of Dolores, Colo., has devised a gravity-fed watering system to do just that. Watch this There’s a Better Way video to find out how it’s done.