I think Hayden sells rods that are within 0.03mm of each other. The set he sold me are within 0.01. I also made my own rods with a jig like this one [
www.thingiverse.com] I doubt they were better than 0.1mm but the printer worked fine. My printer came with two rods 2mm longer than the rest. It took me over a year to notice it. Higher precision is always better but for general purpose (IMO) if you can get all the rods to slide into a jig like above, it'll work fine.
Edited 1 time(s). Last edit at 02/04/2021 09:27AM by thehankinator.