Looks like yet another case of sticking in the vertical linear bearings / rods.
Short suggestions to remedy: add some weight (500-1000g) on the platform between the rods, wipe off any lubricant off the Z-rods (they should be dry and non slippery), remove the linear bearings and exercise them (a lot) by running them back and forth along the rods until the motion feels smooth and rolling (no skidding).
If you find a good source of components, you could also try to replace the linear bearings with higher quality parts (Misumi parts have been recommended by some).
See here (for example, but there are other similar threads):
-
2
Recommended Posts
Eraser 31
Anyone?
Thanks!
Link to post
Share on other sites