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  • Drilling question:

    Just wondering how many here use "Screwmachine length" or "Stub drills"

    to gain more "Z" height on your'e mill?

    Any pros or cons to using them ?

    thanks.

  • #2
    They're not nearly so bendy, so I use 'em most of the time by choice. Makes it easier to hit the target. I reach for the jobber length for jobs where I think I might dull the bit on mystery metal, and, of course when I need the length. The jobbers are somewhat less expensive than other lengths.
    Cheers,

    Frank Ford
    HomeShopTech

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    • #3
      +1 on that
      1601

      Keep eye on ball.
      Hashim Khan

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      • #4
        +2... I rarely use "jobber" length, not for the added "z", but because they are stiffer.

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        • #5
          I use them almost exclusively for the reasons already mentioned. I rarely need the depth of a jobbers drill.

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          • #6
            The 1/2inch jobbers drills seem to be all 6 inches long, compared to the 1/2in "Stub Drills" @ 3 3/4 inches, quite a difference.

            Comment


            • #7
              Fraction and Number sizes

              Except when I need the length, I use 135 degree split point Screw machine length. As a rule I never pilot drill but just drill to size. Having a Darex M5 to resharpen is a bonus.

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              • #8
                Agree on them being more rigid , but a lot of the time it depends on how much room there is after setup etc.
                Michael

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                • #9
                  I'll just say that my local supply shop has started stocking screw machine length, now.

                  Pops

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                  • #10
                    The only con I see with useing screw machine length drills is your spotting drills will feal neglected LoL
                    Craftsman 101.07403
                    Grizzly G0704
                    4x6 Bandsaw

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                    • #11
                      Hold them in an ER chuck and you may not have to crank the Z up or down when swapping from an endmill.
                      Paul Compton
                      www.morini-mania.co.uk
                      http://www.youtube.com/user/EVguru

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