Feel free to correct me on this, as my experience lies primarily with cartesian CNC routers. I recently upgraded my CNC and have a bunch of leftover NEMA 23 steppers, and I was trying to find a project to start on. I was curious if it is even possible to create a 3"x22" lathe (or somewhere around those dimensions) for use as a gunsmithing tool. It would primarily be used for threading and reprofiling barrels. I honestly do not know where to start on something like this, as I have very limited CNC lathe experience. I browsed some of the projects, and most of them appeared to either be wood lathes, or soft metal applications like aluminum. Any insight would be great where to start, just so I can see a basic layout of a lathe capable of mild/stainless steel work. My main questions are what kind of spindle motor would be necessary, and the general costs involved. Lastly, is the best approach to just retrofit an existing lathe or can you design one from the ground up affordable.. Thanks!