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My drill bit doesn't remain secure in the chuck of my drill.

I'm drilling 1/2'' holes in my foundation for retrofit foundation bolts. I'm using Bosch carbide hammer drill bits.

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  • Corey McConnell
    Corey McConnell May 11, 2010

    Does this hammer use a keyed chuck or an SDS plus chuck system?

  • clyde2j2
    clyde2j2 May 11, 2010

    Is this a keyed chuck or keyless?

  • Ernie DeLong
    Ernie DeLong Dec 11, 2013

    It uses a keyless locking system

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Grind bits shank in a triangle to let the drill chuck get a better hold of bit but be carfule because this also takes away the drills ability to slip if it hits something solid.

Posted on Apr 15, 2009

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