[taneq]

You can do it on common equipment but I dunno if I’d call it “easy.” There’s a reason that +/- 0.05mm costs a lot less than 0.02mm.

[metaphor]

This.

For the unindoctrinated, this concise Typical Tolerances of Manufacturing Processes reference[1] may be useful towards establishing pragmatic expectations for manual processes.

[1] https://mae.ufl.edu/designlab/Lab%20Assignments/EML2322L-Tol...