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  • interesting...how much does the drill run out at the bottom of the hole? I have a similar application but am worried about the runout.

  • i had 4 bars to drill, the best was about 1mm, and the worst was 5mm runout, which was good enough for the customer. Material was 4140, 375rpm @ 45 mm/min

  • My what a big drill u have!

    Is tis all u do all day lol?

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