If you axis is skipping without making noise, check to make sure the set screw on the belt pulley is tight. (That is assuming it's an axis with a belt pulley.) I have two set screws per pulley and one of the two had stripped out. Had to switch to a cut down M3 bolt. https://reprap.org/forum/read.php?4,234495,234495#msg-234495 Fri, 06 Mar 2026 06:25:20 -0500 Phorum 5.2.23 https://reprap.org/forum/read.php?4,234495,235236#msg-235236 https://reprap.org/forum/read.php?4,234495,235236#msg-235236 appdev007 Reprappers Tue, 13 Aug 2013 01:12:23 -0400 https://reprap.org/forum/read.php?4,234495,235217#msg-235217 https://reprap.org/forum/read.php?4,234495,235217#msg-235217
Also, if you tighten the set screw or screws, then loosen and slide off the pulley you will see marks where the set screws(or grub screw) impacted the shaft. If you just file or grind those spots down that will help a lot.

Alternatively, a small drill can be used to make a dimple or depression where the marks are. Set screws grab well if they are seated in a recess of some kind. Any kind of thread locker will help hold things long term.

Isn't it a pain when something simple like that lets go near the end of a big print!?]]> Yvan Reprappers Mon, 12 Aug 2013 22:18:14 -0400 https://reprap.org/forum/read.php?4,234495,235106#msg-235106 https://reprap.org/forum/read.php?4,234495,235106#msg-235106 -------------------------------------------------------
> Another way to fix this issue: "Planes can be
> machined with a simple Dremel. You can control
> pulley position with nail varnish on the axis and
> the pulley. Now you are sure pulley will not slide
> again!"


If they slip again I had planed on the dremel. Nail polish holds pretty well though?]]> appdev007 Reprappers Mon, 12 Aug 2013 14:20:27 -0400 https://reprap.org/forum/read.php?4,234495,235095#msg-235095 https://reprap.org/forum/read.php?4,234495,235095#msg-235095 Cuteberry Reprappers Mon, 12 Aug 2013 13:42:20 -0400 https://reprap.org/forum/read.php?4,234495,234915#msg-234915 https://reprap.org/forum/read.php?4,234495,234915#msg-234915 appdev007 Reprappers Sun, 11 Aug 2013 23:03:09 -0400 https://reprap.org/forum/read.php?4,234495,234873#msg-234873 https://reprap.org/forum/read.php?4,234495,234873#msg-234873 Wissing Reprappers Sun, 11 Aug 2013 18:59:52 -0400 https://reprap.org/forum/read.php?4,234495,234495#msg-234495 https://reprap.org/forum/read.php?4,234495,234495#msg-234495 appdev007 Reprappers Sat, 10 Aug 2013 13:10:00 -0400