# Filament gaps at color change

**URL:** <https://forum.snapmaker.com/t/filament-gaps-at-color-change/42001>\
**Category:** U1 Troubleshooting guides\
**Created:** [May 16, 2026, 11:39pm UTC](https://forum.snapmaker.com/t/filament-gaps-at-color-change/42001 "2026-05-16T23:39:46Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![SpyderByte](https://avatars.discourse-cdn.com/v4/letter/s/dc4da7/32.png) [@SpyderByte](https://forum.snapmaker.com/u/SpyderByte)\
**Post date:** [May 16, 2026, 11:39pm UTC](https://forum.snapmaker.com/t/filament-gaps-at-color-change/42001/1 "2026-05-16T23:39:46Z")

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Have used my U1 for less than 30 hours of prints and no problems with it in any way. I have been using the Paxx Extended on current firmware as it’s updated and all recalibrations each time it upgrades. The prints have been exceptional but I just noticed something new on my more recent print.

It was a downloaded STL file in one color and I painted it in Snorca and printed it in 4 colors. It looked great on the machine until I got it under good light and noticed that there are gaps along each different color change. I’m going to assume it’s something to do with the way I painted it…I was able to select “areas” and let paint do that entire section and I didn’t do any touch ups along the color separations.

Just weird because I had just completed three 1" tall/diameter 3 color ghosts prior to this print, and even a 4 color pokemon similar to the test dragon, and none of them exhibited this problem

Thoughts? And sorry for the crappy dimly lit phone pic.

 ![IMG_20260516_192606303](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/3X/7/d/7da1b02a781462bda10f3ba01c9a0a826969f43d.jpeg)

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**Author:** ![CrazyIvan](https://avatars.discourse-cdn.com/v4/letter/c/7bcc69/32.png) [@CrazyIvan](https://forum.snapmaker.com/u/CrazyIvan)\
**Post date:** [May 17, 2026, 6:25am UTC](https://forum.snapmaker.com/t/filament-gaps-at-color-change/42001/2 "2026-05-17T06:25:35Z")

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Have a close look at the slicer’s print preview simulation and see whether the gaps you are worried about are baked into the slicer output.

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**Author:** ![SpyderByte](https://avatars.discourse-cdn.com/v4/letter/s/dc4da7/32.png) [@SpyderByte](https://forum.snapmaker.com/u/SpyderByte)\
**Post date:** [May 17, 2026, 12:11pm UTC](https://forum.snapmaker.com/t/filament-gaps-at-color-change/42001/3 "2026-05-17T12:11:14Z")

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They are there in the slice preview. It was set at .20 standard. No supports in those areas. And now that I look at it I think it was the model and the detail level it was set at - 9222 triangles and medium detail level. I’m going to try to find the original file online again and see if Snorca prompted to Simplify for some reason and I agreed or if the model was just poorly designed. Ironically, the general body surface finish is really nice with the pattern, except for those gaps. In a decade of downloading and printing stl’s I don’t think I’ve ever seen this, but being new to multi-color I kinda figured it was color change related, but apparently not. THANKS!