String & Roller type of rifling machine built by me in Bulgaria
grabcad
A string & roller type rifling machine was constructed by me in Bulgaria. The functioning can be understood from its 3D model, where a metal string is wrapped around a threaded roller (string fits inside threads). Roller diameter determines pitch. I've also uploaded a rifling head designed by me, suitable for 9x19mm barrels and similar profiles, to aid anyone building this machine.
Download Model from grabcad
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