# Problem with the bed at the time of printing it sags

**URL:** <https://forum.snapmaker.com/t/problem-with-the-bed-at-the-time-of-printing-it-sags/23502>\
**Category:** Snapmaker 2.0 (3-in-1)\
**Created:** [January 12, 2022, 2:54pm UTC](https://forum.snapmaker.com/t/problem-with-the-bed-at-the-time-of-printing-it-sags/23502 "2022-01-12T14:54:43Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![mauricio](https://avatars.discourse-cdn.com/v4/letter/m/90db22/32.png) [@mauricio](https://forum.snapmaker.com/u/mauricio)\
**Post date:** [January 12, 2022, 2:54pm UTC](https://forum.snapmaker.com/t/problem-with-the-bed-at-the-time-of-printing-it-sags/23502/1 "2022-01-12T14:54:43Z")

</div>

At the time of printing the bed moves vertically when moving through the y-axis. I have two snapmaker 2.0 A360 printers and it only happens to me in this one, I tried to disassemble it and reassemble it making sure everything was fine. But I don’t know if there is a problem with the rails or what I could do. This problem also causes that not all the printing comes out uniform or there are problems of layer shifting

[https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/3X/d/4/d410cfbe974f04e4a6cf0bb986abaed2e44ac43f.mp4](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/3X/d/4/d410cfbe974f04e4a6cf0bb986abaed2e44ac43f.mp4)
  

[https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/3X/4/7/47fe9cc770165d668a8a843b8ec57199773e9e6d.mp4](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/3X/4/7/47fe9cc770165d668a8a843b8ec57199773e9e6d.mp4)
  

[https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/3X/1/1/111248b8fe9e83d8f3d52c26e5a6083e82a3dfe6.mp4](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/3X/1/1/111248b8fe9e83d8f3d52c26e5a6083e82a3dfe6.mp4)
  
please your help to solve this problem

---

<div class="post-metadata">

**Author:** ![sdj544](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/sdj544/32/11365_2.png) [@sdj544](https://forum.snapmaker.com/u/sdj544)\
**Post date:** [January 12, 2022, 7:23pm UTC](https://forum.snapmaker.com/t/problem-with-the-bed-at-the-time-of-printing-it-sags/23502/2 "2022-01-12T19:23:49Z")

</div>

> [@Excessive play in x-axis linear module bracket](https://forum.snapmaker.com/t/excessive-play-in-x-axis-linear-module-bracket/9029):
>
> The mounting bracket on the linear module on the x-axis on my A350 is loose. The toolhead is tight to the bracket but the bracket itself now rocks up and down a millimeter or two. I couldn’t tell if there is a way to tighten up something inside. I tried opening the end like they suggest to look for the silicone pad, but they warn about messing up the limit switches so I didn’t want to go any further. I put in a support ticket, but would love to solve it myself. I could probably just swap out …

---

<div class="post-metadata">

**Author:** ![scyto](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/scyto/32/13938_2.png) [@scyto](https://forum.snapmaker.com/u/scyto)\
**Post date:** [January 13, 2022, 1:13am UTC](https://forum.snapmaker.com/t/problem-with-the-bed-at-the-time-of-printing-it-sags/23502/3 "2022-01-13T01:13:53Z")

</div>

You have loose bearings. They can be tightened.

These are my random thoughts on this matter:

1. this is fine if you are mechanically inclined
2. not for the faint of heart IMO
3. yes you can easily break the limit switch, but can also be careful
4. i broke first two i adjusted (broke limit switch one on because a screw (from the black clip for the metal strip) fell in the rail and i didn’t notice) broke the other one by over tightening the grub screw for the bearing adjust warping the aluminum.
5. of the two replacements ones sent they still wobbled, managed to adjust them
6. of the two replacements sent to replace #5 1 was fine and 1 was damaged in transit (hence why i did 5 after 6)
7. the youtube video of two customers tearing don and rebuilding (husband and wife?) has incorrect instructions for putting the metal strip back on - so be careful.

my advice, log a support ticket, dont let them make you adjust them unless you are really up for that.

tl;dr if you are a klutz like me it will take you a total of 6 rails before you feel confident stripping them down to adjust the bearing…