Pull the rifling when rotating or broach tube rotation or both rotation??
The pipe is fixed and the cutter head can be taken into consideration with the percussion drill at the top of the drill bit, not knowing what exactly. Only know that grinding, and pull a tube, do not rub, do not change the knife!
The pipe is fixed, and the broach rod moves along with the threaded guide rail to drive the broach head with a certain deflection angle.
The barrel to fixed wire using rotary broach rifling
