buying a lathe?

[asid61]

Originally Posted by RoboChair

You want a 0.040" parting tool from Little Machine Shop
https://littlemachineshop.com/produc...gory=202639332

Those are ok, but you would still have to grind them down for 3/8" and smaller snap rings- those require a 0.029" wide groove, and the tools to make that cost $50+ unless you make your own. I recently was able to make my own Thinbit holder, and I highly recommend that route- it's very easy to make your own holders for indexable tooling.
Oh, you'll want a Quick Change Tool Post (QCTP). They make toolchanges super fast and height adjustments easy.