A ShopMade Compact Rotary Broach | The HobbyMachinist
Jan 17, 2017· Finally I decided to make one and the result is shown below with the tool installed in a vertical mill. Most shopmade rotary broaches that I''ve seen use a pair of radial ball bearings and a ball thrust bearing. Most of these tools are also pretty darned large and would look ridiculous on my 8 x 30 vertical (definitely overkill for my needs).