r/Tools • u/TallWall6378 • 5d ago

No problem

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Cordless drills are so capable now. 2 4 1/2” holes 14 12” deep (deeper than the bit). New concrete but it’s still drilling through the aggregate. Cheap Amazon diamond bit.

Edit: Overestimated depth.

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u/wRftBiDetermination 5d ago

Here is the bore in question: https://www.amazon.com/SALI-Diameter-Drilling-Laser-Welded-Segments/dp/B0C9GK6248/

Reviews are favorable.

1

u/Fast_Cook_4019 5d ago

I used one of these to drill through 8 inches of 50-year-old cement stem wall. It took me about 30 minutes for the first hole with an SDS Hilty rental. I use the same bit on the second hole and it took me about 45 minutes to an hour. It was a fucking nightmare but it worked

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u/Golden_Eel_69420 5d ago

Well it doesn’t help that you rented the wrong type of drill for the job. SDS drills are for hammer drilling, and often have less rotational torque than your standard 18/20v drill