X-Axis Failure
We have an MK3S printer, factory built, that has been working well for months. Suddenly when trying to print, the X-Axis carriage slams into the left vertical upright and then does not travel all the way toward the right. When powered down the x-carriage can be moved freely by hand near the left position but then jams up toward the right. I also tried an XYZ calibration that indicated an X-axis failure. What could have happened and how can it be fixed?
RE: X-Axis Failure
Debris in bearing or possible bearing failure due to not lubricating bearing prior to assembly. Either way, you will need to tear down. Remove and clean the x-bearings. Relubricate and check them by moving just the bearings on the rod to verify smooth motion.
RE: X-Axis Failure
Also be careful of the bolts holding the bearings to the extruder. If too tight they can cause bearing problems. Just snug them.
Same goes for the U-Bolts of Death on the Y axis. Just snug them - or you crush the bearing.