How to make a siwar chisel for barrel rifling grooving using the grinding technique

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How to make a siwar chisel for barrel rifling grooving using the grinding technique

My technique for making chisels for rifling barrels uses a grinder with a lathe.The chisel material I use is from an old threaded TAP.This metal formation uses a widened siwar/screw thread technique with 3-point grooves.
Grinding technique With this lathe you have to be careful with the sparks.
Lathe
Torno
Creative idea
Making tools
Rifling barrel
Making screw
Make a 3 point thread
Welding
Welding for beginner
Welding aluminium
Machining
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