“Worked well for drilling (coring) a 3 1/2" deep hole in a prcast concrete mantel I made.
I used it with a variable speed angle grinder polisher with water feed meant for polishing concrete / marble etc. DON'T use a high speed angle grinder.
I was worried , but it did cut through a 5/16" allthread rod I had placed for reinforcement. Didn't seem to do any harm to the pretty generously sized chunks of diamond impregnated cutter teeth.”
“This worked well for drilling through my 5000 psi Superior Walls concrete foundation to install fiber optic cable. Using a standard drill, it took 2 full batteries and some elbow grease.”
“Been looking for this for years. This works perfectly for my needs. Some decks we install for pool covers are delicate. The 3/4 inch core drill did a great job.”
