# G-Code Files Break Too Easily

**URL:** <https://forum.snapmaker.com/t/g-code-files-break-too-easily/42555>\
**Category:** Feature Requests\
**Tags:** Gcode, Firmware, U1\
**Created:** [July 17, 2026, 6:52pm UTC](https://forum.snapmaker.com/t/g-code-files-break-too-easily/42555 "2026-07-17T18:52:37Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![CrazyIvan](https://avatars.discourse-cdn.com/v4/letter/c/7bcc69/32.png) [@CrazyIvan](https://forum.snapmaker.com/u/CrazyIvan)\
**Post date:** [July 17, 2026, 6:52pm UTC](https://forum.snapmaker.com/t/g-code-files-break-too-easily/42555/1 "2026-07-17T18:52:37Z")

</div>

As of 1.4.1, G-Code files are scanned to check for validity before printing, but the validity criteria are too strict. In particular, it should be possible to omit some or all of the configuration block at the end, and have the printer adopt sensible defaults.

---

<div class="post-metadata">

**Author:** ![CrazyIvan](https://avatars.discourse-cdn.com/v4/letter/c/7bcc69/32.png) [@CrazyIvan](https://forum.snapmaker.com/u/CrazyIvan)\
**Post date:** [July 19, 2026, 7:09am UTC](https://forum.snapmaker.com/t/g-code-files-break-too-easily/42555/2 "2026-07-19T07:09:00Z")

</div>

> [@Firmware Wishlist](https://forum.snapmaker.com/t/firmware-wishlist/42536/8):
>
> 1. Yeah, good point liking this one muchy

My recent use-case was that I wanted to remove preset filament colours in a print file (yes, I know you can turn off filament auto-matching in the printer settings). Simply removing one line in the config block that appears at the end of the file broke it.

This might be build into Klipper, I’m not sure, but it seems very restrictive. I am used to hand-coding test G-Code, and if a few lines of G-Code requires several KB of preset configuration stuff I can’t see that’s viable any more.