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Tymian_ t1_jdm4vvx wrote

If you need for example 5mm hole, then start with 3mm drill bit. Get a proper SDS impact drill and bits. Dont force it, let the bit do the hammering. Buy decent drills, and get at least 2-3 spare ones. After 30s of drilling dip the drill bit into water to cool it off.

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sendcomfort OP t1_jdmga7i wrote

My mistake was assuming a normap handheld (but still hammer) drill would be sufficient for the job I suppose, thanks

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