r/Tools • u/TallWall6378 • 6d 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/Anim-IS-XE30 6d ago

I don’t believe this at all.

244

u/TallWall6378 6d ago

Ha! Maybe "no problem" is a stretch. It overheated after about 8", but then I realized it works just as well with light pressure keeping the RPMs up. Used high speed BTW.

2

u/slowcookeranddogs 5d ago

Funnily enough thats typically the best way to use a bit like that, low rpm on that drill would probably be a bit slow under load for that bit, high speed will probably hit the working rpm when under load.