# problem with Y-axis shift

**URL:** <https://forum.lightburnsoftware.com/t/problem-with-y-axis-shift/166211>\
**Category:** Community Laser Talk\
**Tags:** ruida\
**Created:** [February 24, 2025, 10:55am UTC](https://forum.lightburnsoftware.com/t/problem-with-y-axis-shift/166211 "2025-02-24T10:55:21Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![ednisley](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/ednisley/32/40455_2.png) [@ednisley](https://forum.lightburnsoftware.com/u/ednisley)\
**Post date:** [February 24, 2025, 2:45pm UTC](https://forum.lightburnsoftware.com/t/problem-with-y-axis-shift/166211/2 "2025-02-24T14:45:14Z")

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> [@Ragair](#):
>
> shifts on the Y axis

_Assuming_ the Y axis points to the right in that picture, this may be another case of `PWM Rising Edge Valid` mis-configuration.

This discussion covers the situation:

> [@Image shifting and bunching up but cut out is OK](https://forum.lightburnsoftware.com/t/image-shifting-and-bunching-up-but-cut-out-is-ok/145984/):
>
> Red-Black 90w Laser Ruida controller engrave 400mm/s 25% Fill 450mm/s 20% Cut 25mm/s 65% Birch ply held down pins belts are tight so are stepper motors When doing a engrave/fill and cut I get the fill shift while the engrave bunches up, cut out in just fine. This is repeatable, and all come out the same, like it was meant to be, how do I attach image?

Note that folks have received machines mis-configured at the factory _and_ the symptoms appear only for specific patterns / optimizations / speeds / whatever. ☹

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_[View the full topic](https://forum.lightburnsoftware.com/t/problem-with-y-axis-shift/166211)._