The right x-end has a stepper motor: the left x-end has nothing. I made a little box to add weight on the left end (I used some tungsten fishing weights) to balance the x assembly. On my machine this made a big difference. The machine is quieter/smoother moving the carriage up and down and print quality has improved since the left x-end is held down firmly just as much the right. [attachment 31262 X-EndCounterweight.jpg] I love how easy it is to work on the Mendel90. Medel90 rules (tu)! https://reprap.org/forum/read.php?292,343105,343105#msg-343105 Fri, 04 Sep 2026 20:07:56 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?292,343105,346759#msg-346759 https://reprap.org/forum/read.php?292,343105,346759#msg-346759
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Retightening everything didn't solve it either, but a few drops of handy oil seems to have cleared the issue again for a little while from now. The two z threaded rods look kind of blackened with stuff by the way so I guess they could really use some good cleaning also.]]> Nilez Mendel90 Mon, 28 Apr 2014 13:51:33 -0400 https://reprap.org/forum/read.php?292,343105,346668#msg-346668 https://reprap.org/forum/read.php?292,343105,346668#msg-346668 Garry Bartsch Mendel90 Mon, 28 Apr 2014 12:04:17 -0400 https://reprap.org/forum/read.php?292,343105,346664#msg-346664 https://reprap.org/forum/read.php?292,343105,346664#msg-346664
I've tried to get them parallel a while ago to see if that helped but I certainly didn't do it as elaborate as you're describing so I'm going to try this.]]> Nilez Mendel90 Mon, 28 Apr 2014 11:48:02 -0400 https://reprap.org/forum/read.php?292,343105,345439#msg-345439 https://reprap.org/forum/read.php?292,343105,345439#msg-345439
Good luck!]]> Garry Bartsch Mendel90 Sat, 26 Apr 2014 03:03:34 -0400 https://reprap.org/forum/read.php?292,343105,345022#msg-345022 https://reprap.org/forum/read.php?292,343105,345022#msg-345022
Darn! The sound only disappears when I relieve some of the downward pressure on the nut on the right (by very gently pushing up from underneath the right x-end) and not by pushing down on the left. Guess I still need another solution. My printer works great as far as I can tell but that sound when lowering down the first 15 cm....AARGH soo high pitch and loud . LOL Even my friends complained about it sitting in the other room]]> Nilez Mendel90 Fri, 25 Apr 2014 08:04:59 -0400 https://reprap.org/forum/read.php?292,343105,344751#msg-344751 https://reprap.org/forum/read.php?292,343105,344751#msg-344751 Ask and ye shall receive. Here you go. I made the walls on the open area 2mm thick rather than 1mm. Maybe you can find more sophisticated weight than fishing beads. ;)

@Nilez
Hope some more weight on the left end helps. I clued in on this by using my hand to press down on the left end during raising and lowering the carriage. The difference was immediate.

It goes without saying be VERY GENTLE when tightening the screws so as not to damage the X end itself.]]> Garry Bartsch Mendel90 Thu, 24 Apr 2014 16:38:22 -0400 https://reprap.org/forum/read.php?292,343105,344508#msg-344508 https://reprap.org/forum/read.php?292,343105,344508#msg-344508 Nilez Mendel90 Thu, 24 Apr 2014 07:51:26 -0400 https://reprap.org/forum/read.php?292,343105,344419#msg-344419 https://reprap.org/forum/read.php?292,343105,344419#msg-344419 Any stl to share? I'd like to try this as well :)]]> kodde Mendel90 Thu, 24 Apr 2014 05:17:02 -0400 https://reprap.org/forum/read.php?292,343105,343105#msg-343105 https://reprap.org/forum/read.php?292,343105,343105#msg-343105
[attachment 31262 X-EndCounterweight.jpg]

I love how easy it is to work on the Mendel90. Medel90 rules (tu)!]]> Garry Bartsch Mendel90 Mon, 21 Apr 2014 16:57:00 -0400