drill square holes

  1. Rotary Broach

    Rotary Broach

    shop made rotary broach
  2. Ulma Doctor

    Shop Made Rotary Broach, Down And Dirty!

    Shop Made Rotary Broach i have a job that requires a square hole to be pierced through a piece of machined steel. the material is too thin to be push broached for fear of fracture. i don't have pull broaches or the puller for that matter, so i'm doing the next easiest method i have seen. i...
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