# Gantry not moving correctly on Y axis

**URL:** <https://community.inventables.com/t/gantry-not-moving-correctly-on-y-axis/93945>\
**Category:** Assembly\
**Created:** [June 13, 2020, 1:13pm UTC](https://community.inventables.com/t/gantry-not-moving-correctly-on-y-axis/93945 "2020-06-13T13:13:10Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![EileenO\_Mahony](https://avatars.discourse-cdn.com/v4/letter/e/b19c9b/32.png) [@EileenO\_Mahony](https://community.inventables.com/u/EileenO_Mahony)\
**Post date:** [June 13, 2020, 1:13pm UTC](https://community.inventables.com/t/gantry-not-moving-correctly-on-y-axis/93945/1 "2020-06-13T13:13:10Z")

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I am trying to do a test carve. The last time I tried eveything moved ok on the x, y, z when I tested it pre-carve. The test carve didnt work as I found out later the belt on the gantry was too loose. The gantry moved quite a lot during the carve (the left side would go up on the Y, while the right side would go down on the Y) and I broke a bit.

So I tightened the belts. Pre-test cut I still have the same issue when testing the movement - The left side of the gantry will tweak up on the Y, while the right side goes down on the Y. I have rewired the controller in case anything was loose but it doesnt make a difference.

Any thoughts was be greatly appreciated 🙂

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**Author:** ![HaldorLonningdal](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/haldorlonningdal/32/72377_2.png) [@HaldorLonningdal](https://community.inventables.com/u/HaldorLonningdal)\
**Post date:** [June 15, 2020, 6:58am UTC](https://community.inventables.com/t/gantry-not-moving-correctly-on-y-axis/93945/2 "2020-06-15T06:58:07Z")

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Sounds like you need to reverse direction on one of the Y-steppers.  
This is done by swapping over one pair of the stepper wires on one stepper.

**On Y2, flip the green and black wire** (per Xcarve manual). If your Y now move in the wrong direction, flip them back again and flip green/black on Y1

_(it can also be reversed in software but wires are faster if one is unsure, but a prerequisite is both axis move same direction)_

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**Author:** ![EileenO\_Mahony](https://avatars.discourse-cdn.com/v4/letter/e/b19c9b/32.png) [@EileenO\_Mahony](https://community.inventables.com/u/EileenO_Mahony)\
**Post date:** [June 15, 2020, 8:39pm UTC](https://community.inventables.com/t/gantry-not-moving-correctly-on-y-axis/93945/3 "2020-06-15T20:39:07Z")

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IT WORKED!!!  
I flipped the green and black on the Y2.  
Thank you so much… That’s just brilliant.

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<div class="post-metadata">

**Author:** ![HaldorLonningdal](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/haldorlonningdal/32/72377_2.png) [@HaldorLonningdal](https://community.inventables.com/u/HaldorLonningdal)\
**Post date:** [June 16, 2020, 6:05am UTC](https://community.inventables.com/t/gantry-not-moving-correctly-on-y-axis/93945/4 "2020-06-16T06:05:10Z")

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You are welcome, and happy carving 🙂