Hi all, I recently upgraded my M90 with new x-ends and new belt, as nophead described on his blog... After putting everything together, and calibrating it, I get weird errors while printing in X-axis. See album with pictures below... These x-axis erorrs are different every time, sometimes jump is to left, other time to right... really weird.Y-axis is perfect - see smooth walls on rectangular object in pics... [imgur.com] I tried several things, but results remain the same: tightening the belt changing the pulley tightening the grub screw on pulley (pulley does not move - i've marked position with marker, and after print its still on the exact same spot, and holds tight).. moved the pulley further on the motor shaft / closer to the motor shaft (so that belt would not touch the border on idler - and it does not seem to)... I have default firmware, with nopheads "slowed-down" XY-accelerations, 4000->2000.. At this moment I am at the loss, of what to do, any any suggestions is welcomed. thanks, Jaka https://reprap.org/forum/read.php?292,338737,338737#msg-338737 Wed, 07 Oct 2026 21:34:08 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?292,338737,338806#msg-338806 https://reprap.org/forum/read.php?292,338737,338806#msg-338806 nophead Mendel90 Sat, 12 Apr 2014 08:44:05 -0400 https://reprap.org/forum/read.php?292,338737,338797#msg-338797 https://reprap.org/forum/read.php?292,338737,338797#msg-338797
I have had the same issues with the prints by the looks of the pictures. My fix was to properly align the belt pulley (motor side) so that it always stayed in the middle. Since you have been trying this i don't know if this will help, but i just wanted to put emphasis on it because it is important. Hope it works!

Bjarke]]> bjarkethomsen Mendel90 Sat, 12 Apr 2014 08:28:38 -0400 https://reprap.org/forum/read.php?292,338737,338737#msg-338737 https://reprap.org/forum/read.php?292,338737,338737#msg-338737
I recently upgraded my M90 with new x-ends and new belt, as nophead described on his blog... After putting everything together, and calibrating it, I get weird errors while printing in X-axis. See album with pictures below... These x-axis erorrs are different every time, sometimes jump is to left, other time to right... really weird.Y-axis is perfect - see smooth walls on rectangular object in pics...

[imgur.com]

I tried several things, but results remain the same:
tightening the belt
changing the pulley
tightening the grub screw on pulley (pulley does not move - i've marked position with marker, and after print its still on the exact same spot, and holds tight)..
moved the pulley further on the motor shaft / closer to the motor shaft (so that belt would not touch the border on idler - and it does not seem to)...

I have default firmware, with nopheads "slowed-down" XY-accelerations, 4000->2000..

At this moment I am at the loss, of what to do, any any suggestions is welcomed.

thanks,
Jaka]]> weirdgod Mendel90 Sat, 12 Apr 2014 05:06:45 -0400