Lykle
New Member
Depends on the lathe. But I think it is not realistic in the way I first thought of doing it.
But thinking about it a bit more, I think with a angled broach, where the angle of the cutter forces the broach to rotate, that might work.
As long as the broach can rotate freely, meaning it will need to be supported by bearings on both ends.
All that is needed then is a press to push the broach through.
Make a cylinder with the same diameter as the barrel bore, make a hole in the cylinder at an angle, say 5 deg. Insert a cutter with a screw on the other side to adjust depth of cut. The first cut will be tricky to make sure it rotates properly, but after that, the cutter will follow the groove.
But thinking about it a bit more, I think with a angled broach, where the angle of the cutter forces the broach to rotate, that might work.
As long as the broach can rotate freely, meaning it will need to be supported by bearings on both ends.
All that is needed then is a press to push the broach through.
Make a cylinder with the same diameter as the barrel bore, make a hole in the cylinder at an angle, say 5 deg. Insert a cutter with a screw on the other side to adjust depth of cut. The first cut will be tricky to make sure it rotates properly, but after that, the cutter will follow the groove.