calibration tool with printable 110mm o.d. bushing or bearing 70mm i.d. used for laser cyclops or another project

print bearingouterPart.stl, and then print calibration tool to show how much the inner part needs to be undersized. then look at stl files included for the one that is undersized the amount the tool shows.


i created my own version of a 110mm bearing. this requires several redesigns, and finally i came up with what worked. a video of it working is here https://youtu.be/ADo78XmgUA4
however keep in mind friction on these is still higher than an actual bearing. so adjust motor power accordingl