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Old 03.07.2017, 11:29
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JagWaugh JagWaugh is offline
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Re: Installing Lighting on Concrete Ceiling

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Exactly. Just last month I wanted to install some hooks in the cellar wall but I gave up. Its even harder than the ceiling walls...
For a typical 6-8mm hole Dubel to fit a lamp or such, a good bit and a decent hammerdrill will manage. I have a cheap (60CHF) Einhell cordless hammerdrill with SDS... I bought it to save my Makita cordless from concrete dust by not getting a combination machine. tbh I didn't think it would last or be much good. 8 years later it goes through even the oldest hardest concrete. Not quite like butter, but significantly better than any combi, or corded drill I've ever used.

The corded ones tend to spin too fast and not have much stroke. It's the impact which does the work, the turning just keeps the hole straight and evacuates the dust.

EDIT: Even a Kangol or Hilti will not go through rebar...
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