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With that drill bit you won't be able to get far with concrete brick walls...

I hired an electrician to drill the holes for me earlier this year and it took him over 10 minutes per hole to get through the 60cm (2ft) reinforced concrete slab for running cables between two floors.



Honestly, 10 minutes to go through 2 feet of concrete is damn impressive. I had to put a couple 50A electric circuits through my foundation a few months back and I'm pretty sure we spent more like 45 minutes getting through. And we didn't even hit any rebar, which is a minor miracle itself.




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