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Thread: adjustable step drill for bolt

  1. #1

    Join Date
    Dec 2013
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    glockart's Tools

    Lightbulb adjustable step drill for bolt

    Hello.

    I present my too step drill.

    Turn and drill steel in round bloc and file the groove use air grinder tools.
    And oil quenching.

    finish manual sharpening.

    For good result in mild steel with a slow rotation and abundant lubrication.

    Thanks and sorry for my bad english.

    adjustable step drill for bolt-dsc_7516.jpgadjustable step drill for bolt-dsc_7518.jpgadjustable step drill for bolt-dsc_7519.jpgadjustable step drill for bolt-dsc_7524.jpg

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  2. The Following User Says Thank You to glockart For This Useful Post:

    kbalch (Jan 3, 2014)

  3. #2
    kbalch's Avatar
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    Clermont, FL
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    Thanks glockart! I've added your Two Step Drill Bit to our Metalworking and Machining categories, as well as to your builder page: glockart's Homemade Tools. Your receipt:


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