# X-axis won't retract all the way

**URL:** <https://forum.onefinitycnc.com/t/x-axis-wont-retract-all-the-way/23724>\
**Category:** Original/PRO Series (Buildbotics) (Gen 1)\
**Created:** [November 30, 2023, 10:30pm UTC](https://forum.onefinitycnc.com/t/x-axis-wont-retract-all-the-way/23724 "2023-11-30T22:30:44Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![349iq2345](https://avatars.discourse-cdn.com/v4/letter/3/bb73d2/32.png) [@349iq2345](https://forum.onefinitycnc.com/u/349iq2345)\
**Post date:** [December 1, 2023, 10:05am UTC](https://forum.onefinitycnc.com/t/x-axis-wont-retract-all-the-way/23724/2 "2023-12-01T10:05:48Z")

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Hey Regent,

> [@Y rail and homing problems](https://forum.onefinitycnc.com/t/y-rail-and-homing-problems/23440/7):
>
> this is a frequently asked question. We have a search function here.
> 
> Have you ensured that your machine is accurately [rectangular (“squared”) and coplanar (“not twisted”)](https://forum.onefinitycnc.com/t/what-do-i-do-first/18349/6)?
> 
> Also Onefinity provides a help file which deals with many kinds of blocking of an axis:
> 
> - [Troubleshooting: Rail is getting hung, stuck, or out of alignment](https://forum.onefinitycnc.com/t/troubleshooting-rail-is-getting-hung-stuck-or-out-of-alignment/10826)
> 
> I would check all points one by one to see why your carriage does not move anymore in the middle of the axis.
> 
> There are three causes that are **not** mentioned in the document above:
> 
> 1. Should your machine not be properly [rectangular (“squared”)](https://forum.onefinitycnc.com/t/what-do-i-do-first/18349/6), the Y movement can block.
> 
> 2. And the second possible cause not mentioned in the document above is: [This mysterious issue](https://forum.onefinitycnc.com/t/help-losing-home-during-carves/7022/70) some time ago.
> 
> 3. [Electromagnetic interference (EMI)](https://en.wikipedia.org/wiki/Electromagnetic_interference), as e.g. [mentioned here](https://forum.onefinitycnc.com/t/weird-bahavior-between-controller-and-110-volt-2-2-kw-huanyang-spindle/15650/10).

Welcome to the forum!

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