I'm a bit new to cnc. I'm trying to cut a bearing bore in steel tube (heavy walled) and am having a hard time with concentricity. Does anyone out there have a pretty good idea of depth of cuts for best accuracy? I've got sharp tools, rigid holding and so far have best luck with 2 finishing cuts at .002 depth, after my .050 roughing cuts. But I'm barely holding .001 tolerance.
I know on my lathe, I get best repeatability with ~.010 cuts, but this is a different beast!
The bore is 1.350 and is .440 deep.
Any suggestions?