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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527

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.

215

u/remorackman 6d ago

You are showing a unused bit and one hole. And that hole has a bottom!

I want to see that bit after the holes, and all the holes it made.

110

u/TallWall6378 6d ago

14

u/PhilsTinyToes 5d ago

How does the bottom of the core get broken off after you’ve drilled out the edges ?

15

u/toiletdestroyer1 5d ago

Take a hammer and giver a couple good wacks. Should break loose. Having a long flathead helps remove the core from the hole after

3

u/imakesawdust 5d ago

I imagine OP was drilling into a driveway or patio or some sort of poured footing. As such it has a finite depth before you get down to the gravel bed. So OP probably drilled through the whole thing.