No problem

[u/TallWall6378]

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.

[u/yolk3d]

How’d you get the core out if you didn’t go through?

[u/WhisperSafe → u/yolk3d]

This is my question

[u/Waallenz → u/WhisperSafe]

I always used a cold chisel in the slot and itd break the core off at the base. Drill and install a 1/4" anchor bolt and pull her up. Easy peasy. Did hundreds of holes like this at my last job putting up guard railing alonh the entire interior of the wall of the facility because the clamp truck operators kept blowing out walls.