Tomorrow at the makerspace, I need to remove 0.25mm from the inner dimension of an item made of stainless steel. The item has rounds and straight sections and I'm kinda breaking my brain trying to work out how best to do it. I could use the boring head on the mill... Or an end mill and rotary table... Or the lathe and a boring bar... Or several other methods. I'm not sure which. Fortunately. The tolerances aren't too bad. 250um +50um, -0um.
Need to think.
