<p>I figured it out.</p>
<p>Long hours of printing ASA parts for my upcoming Voron Trident, in an enclosure, made printer parts softer and belts skipped on the teeth. I needed to glue and shim belt ends in place. Next time I'll need to replace these parts, and belts. Hopefully I'll have another printer by then.</p>

CC BY-SA 4.0
2023-12-26T22:19:21.630Z
2023-12-26T22:19:21.630Z
Mołot
<p>Recently both belts on my Prusa MK3S+ became loose. Quite suddenly, too. One print was okay, the next nozzle wobbled in the Y and bed in the X causing layer shifting. More precisely, each movement was shifted pretty randomly.</p>
<p>I checked belt tension and there was basically none. It was good a month ago, and it must've been good enough just one print before. Of course I will tension them again, but I would be glad to know what are the possible causes of belts losing tension suddenly, to check them during the maintenance.</p>
<p><a href="https://i.sstatic.net/FTGos.jpg" rel="nofollow noreferrer" title="Shot of the layers"><img src="https://i.sstatic.net/FTGos.jpg" alt="Shot of the layers" title="Shot of the layers" /></a></p>

<prusa-i3><repair><belt>
What could have caused both belts becoming loose?
Mołot
# What could have caused both belts becoming loose?

(Asked by: username_0 on 2023-12-24)

Recently both belts on my Prusa MK3S+ became loose. Quite suddenly, too. One print was okay, the next nozzle wobbled in the Y and bed in the X causing layer shifting. More precisely, each movement was shifted pretty randomly.

I checked belt tension and there was basically none. It was good a month ago, and it must've been good enough just one print before. Of course I will tension them again, but I would be glad to know what are the possible causes of belts losing tension suddenly, to check them during the maintenance.

[![Shot of the layers](https://i.sstatic.net/FTGos.jpg "Shot of the layers")](https://i.sstatic.net/FTGos.jpg "Shot of the layers")

**Tags:** prusa-i3, repair, belt

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## 1 answers

### Answer by username_0 on 2023-12-26. Score: 3 | Accepted answer

I figured it out.

Long hours of printing ASA parts for my upcoming Voron Trident, in an enclosure, made printer parts softer and belts skipped on the teeth. I needed to glue and shim belt ends in place. Next time I'll need to replace these parts, and belts. Hopefully I'll have another printer by then.


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