How To Turn A Round Groove?

[Downunder Bob]

If you order a Kennametal insert VNGA-434T 0820 It has the right size radius and shape to do that groove. You would have to set the 15 degree angle off a little as the v shape of the insert is 35 degrees and do one side of part at a time. I'm sure you could get other inserts to work also.
jimsehr

Maybe so, but Kennametal tooling is so expensive in Australia, yes I know it's good quality, but just too expensive for the hobby machinist.

 

[Downunder Bob]

If you order a Kennametal insert VNGA-434T 0820 It has the right size radius and shape to do that groove. You would have to set the 15 degree angle off a little as the v shape of the insert is 35 degrees and do one side of part at a time. I'm sure you could get other inserts to work also.
jimsehr

Maybe so, but Kennametal tooling is so expensive in Australia, yes I know it's good quality, but just too expensive for the hobby machinist.