# How to realign the Y rails (x35/x50 machines)

**URL:** <https://forum.onefinitycnc.com/t/how-to-realign-the-y-rails-x35-x50-machines/16494>\
**Category:** Rails\
**Created:** [November 15, 2022, 2:52pm UTC](https://forum.onefinitycnc.com/t/how-to-realign-the-y-rails-x35-x50-machines/16494 "2022-11-15T14:52:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![OnefinityCNC](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/onefinitycnc/32/7_2.png) [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\
**Post date:** [November 15, 2022, 2:52pm UTC](https://forum.onefinitycnc.com/t/how-to-realign-the-y-rails-x35-x50-machines/16494/1 "2022-11-15T14:52:20Z")

</div>

If your machine is out of alignment in the Y rails (most notable when homing) as in one side is against the feet and the other is not like these pictures:

 ![a](https://us1.discourse-cdn.com/flex022/uploads/onefinitycnc/original/2X/2/223df89f8f64795755d863e69c3c7efff6aef7d3.jpeg) ![b](https://us1.discourse-cdn.com/flex022/uploads/onefinitycnc/original/2X/7/78c91974ca52bfd1fdfdc2dee9ec6cf65e67ed2b.jpeg)

* * *

**Here’s how to resolve:**

1. loosen all 8 bolts holding the X rail to the Y rails.
2. reboot the controller
3. skip homing
4. move the Y rails to the front with the joypad as far as you can, so that both y gantrys hit the y feet and come to a resting point up against the feet (you may hear the motors grind during this process, this is normal and will not damage the machine).
5. Once both Y’s are correct, tighten down the 8 X rail bolts.
6. Reboot and rehome
7. Finished

If you are still experiencing issues, you may have a greater issue with a Y axis.  
If so, follow this FAQ:

> [@Troubleshooting: Rail is getting hung, stuck, grinding, or moving in opposite direction](https://forum.onefinitycnc.com/t/troubleshooting-rail-is-getting-hung-stuck-or-out-of-alignment/10826):
>
> Rail is getting hung/stuck/grinding. Special notes to read before following each step: A rail getting stuck/hung is typically one of two things, either a wire/connection issue or the grub screw on the ball screw isn’t tight on the side that isn’t moving. One thing to remember, stall homing adjustments do NOT affect rail movement during cutting or jogging. If the rail isn’t moving correctly during cutting or jogging, incorrect stall homing is an affect of this greater issue. Any time the axis …

Also, make sure your machine wasn’t set up as a parallelogram.

> [@Is your router frame a parallelogram? Mine was!](https://forum.onefinitycnc.com/t/is-your-router-frame-a-parallelogram-mine-was/6086):
>
> I’m on day 2 of CNC setup and I just discovered something that I do not recall seeing on this forum so I thought I’d share. I mounted my machine per the instructions in the manual and YouTube video and it seemed to go well. Everything was jogging smoothly and no binding was evident. I expect most other people have the same experience (good job on design Onefinity!). I was in process of making my spoilboard (t-nuts) and got ahead of myself. I mounted the board…