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  1. #1
    Join Date
    Mar 2007
    Posts
    215

    135 Degree Split Point Drills

    Hey Folks,

    was looking at ordering these 135 degree split point parabolic drills manufactured by Titex. Was wondering if these need to be spot drilled first and if so what angle spot drill. I can't seem to find any spot drills over 120 degrees.

    Thanks,
    CM

  2. #2
    Join Date
    Feb 2011
    Posts
    0
    I assume your talking about carbide drills. Generally the bigger size carbide drills - no - don't bother spot drilling. if your talking about the likes of drills from 1.5mm down, i would spot drill yea. WNT have an 142 degree carbide spot drill in their catalog. www.wnt.com. Well thats my opinion anyway.

  3. #3
    Join Date
    Mar 2007
    Posts
    215
    Thanks Marcutous. The smallest one I'm using is a 1/16" (about 1.59mm.) I am expecting the drills today or tomorrow, I'll let you know how it goes.

  4. #4
    Join Date
    Nov 2008
    Posts
    20
    I use Titex drills every day and do not spot any unless under 1/16

  5. #5
    Join Date
    Feb 2006
    Posts
    338
    If you have any issues or concerns with location or drift on longer drills, try a 2D deep pilot hole with a carbide screw machine length drill of the same point angle.

    Again this would only be needed with small diameter drills and/or jobber and longer length drills.

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