<p>Well that is unique. I would say if you only see this after the printer has been running a while then your electronics are likely overheating. Put a fan on it and report back.</p>

<p>Otherwise and also I would reflash the electronics..</p>

CC BY-SA 3.0
2017-01-11T22:57:05.827Z
Should I put the fan on the main board?
user3557707
CC BY-SA 3.0
2017-01-11T23:16:56.533Z
Yeah see if that fixes it. If so 3d print a case that has a fan holder.
MakerModder
CC BY-SA 3.0
2017-01-11T05:22:20.307Z
2017-01-11T05:22:20.307Z
MakerModder
<p>I have a Prusa i3 and during the print, it will start jerking which makes a noise that sounds like something is going wrong. At first, I thought it was the infill since there is a gap in between the layers which this picture shows (I have ripped off the bad layers to see if I can get any use out of it. The video shows the bad layers). For reference the "wall" along the outside is 2.1 mm.</p>

<p><a href="https://i.sstatic.net/z3bu7.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/z3bu7.jpg" alt="enter image description here"></a> Then about 70% of the way through the print, the Y layers started to shift so I thought that the jerking was a result of this. This is a video of what is happening <a href="https://www.dropbox.com/s/g1afjwyzl8hqej9/IMG_0403.MOV?dl=0" rel="nofollow noreferrer">https://www.dropbox.com/s/g1afjwyzl8hqej9/IMG_0403.MOV?dl=0</a></p>

<p>So is this the infill that is causing the jerking or is there something that I should fix on the printer that will stop jerking?
Thank you!</p>

<print-quality><prusa-i3><y-axis>
Prusa i3 jerking during printing
user3557707
# Prusa i3 jerking during printing

(Asked by: username_0 on 2017-01-11)

I have a Prusa i3 and during the print, it will start jerking which makes a noise that sounds like something is going wrong. At first, I thought it was the infill since there is a gap in between the layers which this picture shows (I have ripped off the bad layers to see if I can get any use out of it. The video shows the bad layers). For reference the "wall" along the outside is 2.1 mm.

[![enter image description here](https://i.sstatic.net/z3bu7.jpg)](https://i.sstatic.net/z3bu7.jpg) Then about 70% of the way through the print, the Y layers started to shift so I thought that the jerking was a result of this. This is a video of what is happening <https://www.dropbox.com/s/g1afjwyzl8hqej9/IMG_0403.MOV?dl=0>

So is this the infill that is causing the jerking or is there something that I should fix on the printer that will stop jerking?
Thank you!

**Tags:** print-quality, prusa-i3, y-axis

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## 1 answers

### Answer by username_1 on 2017-01-11. Score: 2

Well that is unique. I would say if you only see this after the printer has been running a while then your electronics are likely overheating. Put a fan on it and report back.

Otherwise and also I would reflash the electronics..

> **Comments:**
> **username_0**: Should I put the fan on the main board?  
> **username_1**: Yeah see if that fixes it. If so 3d print a case that has a fan holder.  

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