[Tristan Lall]

188 not only used 10-32 screws in the front of the drill (you do only get 1 to 1.5 threads), but also machined an aluminum collar (bolted to the gearbox) to surround the drill. The collars had two machine screws which were tightened to press on the two circular recesses on the side of the drill. Those drills weren't going anywhere. (I'm a little bit concerned about using just the 10-32s--that seems like a dangerous proposition if the motor was struck from behind for any reason.)