machining

  1. frankvw

    Best way to drill larger holes in steel

    I need to drill a 14mm hole in a piece of 1" flat bar (3mm thick). I have a pillar drill. In my experience it's best to start with a small hole and then re-drill it several times with progressively larger drill bits. If I just put a 14mm drill bit on it, it will just sit there and do very...
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