# Box joints not lining up

**URL:** <https://forum.lightburnsoftware.com/t/box-joints-not-lining-up/143839>\
**Category:** Tips and Tricks\
**Created:** [July 12, 2024, 1:17pm UTC](https://forum.lightburnsoftware.com/t/box-joints-not-lining-up/143839 "2024-07-12T13:17:38Z")\
**Posts on this page:** 1\
**Showing post:** 79

<div class="post-metadata">

**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:** [July 20, 2024, 3:42pm UTC](https://forum.lightburnsoftware.com/t/box-joints-not-lining-up/143839/79 "2024-07-20T15:42:04Z")

</div>

A quick summary:

> [@RDSawShop](#):
>
> - the back panel tends to be longer by 3/8"
> - 2 versions of the same box … still having the same result.
> - tried another box generator … Sadly, it is the same result
> - my error is in the X axis not the Y
> - Changing the belt has helped a great deal
> - The aggravating thing is it’s random. Is this typical?

When you run _the same job_ and get _randomly different_ results, it’s a mechanical problem.

It looks like you’ve eliminated quite a few mechanical problems and corrected several mis-calibrations, but there remains (at least) one more mechanical problem.

The hardest part of debugging, at least for me, is when I’ve checked something and decided it’s OK, but overlooked a detail. At that point, I _know_ the problem must lie elsewhere, so I’ll look _everywhere else_ for the longest time.

Now that you’ve eliminated the obvious problems, start from the beginning and examine _everything_ again. Other folks have discovered how subtle the problem may be:

- [Invisibly loosening screws](https://forum.lightburnsoftware.com/t/topic/142076/16)
- [Excessively small stepper driver steps](https://forum.lightburnsoftware.com/t/losing-position-at-end-of-job/139760/8)
- [A bad USB cable](https://forum.lightburnsoftware.com/t/topic/107347/149)
- [Bad assembly at the factory](https://forum.lightburnsoftware.com/t/topic/141906/3)
- [Loose focus lens](https://forum.lightburnsoftware.com/t/topic/134746/10) (or a mirror)
- [Loose motor screws](https://forum.lightburnsoftware.com/t/topic/134710/20)

The point is, look carefully at all the places you _know_ can’t be the problem …

---

_[View the full topic](https://forum.lightburnsoftware.com/t/box-joints-not-lining-up/143839)._