Advanced Scenery Construction Fall 2014

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  • how does a hammer drill work
  • September 19, 2014 at 1:31 am #13902

    michael rinaldi
    Participant

    section view picture of the inside of a hammer drill below the vid

    skip to 00:24 in the video. it shows the hammer drilling in action. (not the best explanation, but its all i could find for now)

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