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118 vs. 135 point angles on twist drills.

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  • 118 vs. 135 point angles on twist drills.

    It's time to buy a new set of drill bits for the Gadget Garage. Everything I have now is sharpened to a 118 included angle. What's the wisdom in 135 points? I've never had problems with the 118's, but I've never used 135's. What would you guys buy and how come?

    Thanks, as usual!

    Hank
    ...from the Gadget Garage
    Millermatic 210 w/3035, BWE
    Handler 210 w/DP3035
    TA185TSW
    Victor O/A "J" series, SuperRange

  • #2
    hankj, 118 is the most efficient angle for drilling metal, 135 is better for harder steels/stainless. There are some 135 premium bits out there that are really bad, they tend to make an oval hole, I bought some Bluemole bits that did that. I would stick with the 118's, and maybe consider a 'screwmachine' length over Jobber length as they are 1/2 the length and don't tend to flex or break as easy. Hope this helps, Paul
    More Spark Today Pleasesigpic

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    • #3
      hey hank go the extra mile and get cobalt.
      Trailblazer 302g
      coolmate4
      hf-251d-1
      super s-32p
      you can never know enough

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      • #4
        Thanks, guys.

        I like screw machine length for that reason - stiff! I'm looking at a USA set from ENCO from 1/16" to 1/2" by 64ths. All my large bits are in good shape, and I'm glad, 'cause them bad boys are EXPENSIVE!

        Hank
        ...from the Gadget Garage
        Millermatic 210 w/3035, BWE
        Handler 210 w/DP3035
        TA185TSW
        Victor O/A "J" series, SuperRange

        Comment

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