I need to cut a bearing seat into the end of a piece of 4130 tube. The tube is 1/2 inch with an 0.083 wall. So that's .5000 OD and .3440 ID. The seat needs to be 0.3745.
I can drill and ream to .374, but I need to get that last .0005, without going over. I can't get any boring tool I have into that small a space. I would appreciate any suggestions you guys might have.