[Solved] Really weird squeaky noises while printing  

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Pecadis
(@pecadis)
Active Member

Hi everyone,

i received my Prusa mk3 at christmas and it was working flawlessly. Today i just started another print and there was the Noise (see video) when printing. Does anyone know where it comes from and how i could fix it? I think it was after the Update to the latest firmware 3.9.3-3556 but i am not sure, so don't pin me on this.

To be honest, it doesn't sound healthy at all.

[video width="1920" height="1080" mp4="https://forum.prusaprinters.org/wp-content/uploads/2021/02/20210204_102819.mp4"][/video]
https://forum.prusaprinters.org/wp-content/uploads/2021/02/20210204_102819.mp4

Thanks a lot =)

This topic was modified 3 months ago by JoanTabb
Posted : 04/02/2021 9:42 am
misan
(@misan)
Moderator

Have you checked there is no dirt or filament strings near the fans?

Posted : 04/02/2021 10:22 am
Pecadis
(@pecadis)
Active Member

yes, it is indeed clean. I have stopped the Print now and could narrow down the issue to the y-axis. The issue unfortunately still persists after lubing the rod

Posted : 04/02/2021 10:37 am
Pecadis
(@pecadis)
Active Member

Ok, i have loosened the steppermotor from the carriage, moving the plate around slowly doesn't make any noise, moving the stepper motor doesn't cause any noise either. Attaching both back together -> Noise

Edit: moving the stepper motor by itself without load also doesn't cause any noise

This post was modified 3 months ago by Pecadis
Posted : 04/02/2021 10:49 am
misan
(@misan)
Moderator

It sounds to me the culprit might be the extruder motor but I have not seen this before (so I might be totally wrong). Could you try to: 1) with the machine powered off, disconnect the extruder motor cable from the board, and 2) attempt to start a print and see if the noise is gone (of course nothing will be printed without the extruder).

 

 
This post was modified 3 months ago by misan
Posted : 04/02/2021 10:56 am
Pecadis
(@pecadis)
Active Member

Hi Misan,

thanks for your suggestions, i was suspecting the extruder as well, turns out, it was the y-axis idler. I might have been fastening the screw tiny bit to much, which caused the plastic to get in contact with the bearing and caused this noise. I have loosened the screw and lubricated the sides of the bearing just to be save. It seems to solve the issue.
I will set this topic as solved when the next print is going well =)

This post was modified 3 months ago by Pecadis
Posted : 04/02/2021 11:18 am
misan
(@misan)
Moderator

@pecadis I am glad to know you figured it out and fixed it. 👍 

Posted : 04/02/2021 11:22 am
Pecadis
(@pecadis)
Active Member

Yes, it was the y-axis idler =)
Fixed now

Posted : 04/02/2021 11:40 am
cwbullet
(@cwbullet)
Illustrious Member

@misan

Good to know.  I have a printer that is squeeking similarly.  I thought it was old bearing.  I repalced them last week to no avail.  I will check the Y idler screw.  Thanks.   

--------------------
Chuck H
3D Printer Review Blog...
Posted : 04/02/2021 11:45 am
Pecadis
(@pecadis)
Active Member

@cwbullet,

actually, it wasn't directly the screw in my case but instead the sides of the idler pressing against the bearing, hence the screw was just too tight.

Good luck with it =)

Posted : 04/02/2021 1:39 pm
cwbullet
(@cwbullet)
Illustrious Member

@pecadis

That makes sense.  

--------------------
Chuck H
3D Printer Review Blog...
Posted : 04/02/2021 1:49 pm
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