I need to machine a face groove with an 8.5" O.D. and 4." I.D. that is 4.81" deep. Any suggestions on tooling that might be available for purchase. I will be doing this on a Romi C.N.C. lathe(with tool post). I realize I will have to probably alternate 2 tools and cut the depth in steps. I would like to be able to get an inch depth at a time. About the widest insert I will be able to use is.25" with a full radius.
Thank you