Here are pictures of a preliminary setup for creating rifling grooves in a piece of steel tubing by using a 3D printed spiral insert, lots of salt water and a battery charger.Electrochemical Machining is a process whereby metal is removed by passing an electrical current through a solution, the insert in this case exposing the specific areas to be ‘cut’ during the process.The results are quite interesting and certainly open up some possibilities for homebuilders.“This is Jeffrod’s ECM jig, 5 inches long with a 0.813 diameter printed in black PLA and setup for 4 grooves using 26 gauge steel music wire for the electrode.”
WilhelmIII
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