[asid61]

Originally Posted by Steven Smith

https://www.google.com/search?q=bori...eF4Gbs20_JM%3A

Sorry for messy link and brevity, on my phone. The tool is held in a mill.You can adjust the offset of the boring bar (cutter) to get a precisely dimensioned hole.

We use these to get press fits for our bearings. I can usually get +/-0.0005 with it even in a rush. They produce very round and smooth holes. I highly recommend purchasing one and learning how to use it if you have a mill.
They will not work in a drill press, however. Not tight enough. It depends on the rigidity of the mill quill.