I was cleaning my linear rods and threaded rods this evening and noticed that the threaded rod on the camera side (left side if you’re looking at the printer) was not set up as far as the other two
When I lift upwards on the rod there is a bit of play where as the right side and rear are tight
Upon further inspection when jogging my bed down from top to bottom (push the down selection multiple times) and the bed traveling down continuously it was not always spinning the inner bearing race and I was getting some noise
I used some Lucas gun oil on the top of the bearing and after working it up and down a few times the noise is gone and the bearing spins freely
Looking at the metal bracket that holds the carriage for the bearing and rods it looks like the weld is just a hair off and the bracket is sitting a bit high meaning the top of the rod is sitting lower in the innner bearing race
I’m not sure if this is causing artifacts or issues that I’ve not noticed yet but that little bit of slop concerns me a bit and the more I think about it the more I think that it could cause ringing through vibration/harmonics
It’s at least worth checking, visually you will see that the threaded rod is not sitting tightly on the top of the upper bearing and if you lift up on the rod there will be some movement where as the other 2 rods are nice and snug in their races
I’ll be keeping a close eye on this
