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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 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!

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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..

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  • $\begingroup$ Should I put the fan on the main board? $\endgroup$
    – user3557707
    Commented Jan 11, 2017 at 22:57
  • $\begingroup$ Yeah see if that fixes it. If so 3d print a case that has a fan holder. $\endgroup$
    – MakerModder
    Commented Jan 11, 2017 at 23:16

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