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Y-Axis displacement, random layer shift  

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JBB
 JBB
(@jbb)
Active Member
Y-Axis displacement, random layer shift

Hi, my old Prusa Mk2 has started to give problems with random shifts in the Y-Axis as you can appreciate in the photo: after hours printing the cylinder it should have continued but it started with random Y-Axis displacements that ruined the print. It is now more and more frequent.

I have been checking and the calibration seemed ok, the belts tension also (somewhat skewed to a side, but I don't see a relationship).

In the video you can see the problem as it happens, a "clank" noise and an incorrect Y-axis displacement that causes a layer shift. I see that the stepper motor does not rotate smoothly when it happens, but I don't know if it is the cause or the consequence. What is your opinion? Can it be a problem with the motor? Mechanical or in the inputs to the motor? 

Any ideas on how to solve this will be most welcome. Thanks for your help. 

 

This topic was modified 2 months ago 2 times by JBB
Posted : 25/07/2022 7:40 pm
JBB
 JBB
(@jbb)
Active Member
Topic starter answered:
RE:

Please, look at the attached video. It seems not to have uploaded correctly in the original post.... netither this time. Does the forum support videos?

This post was modified 2 months ago by JBB
Posted : 25/07/2022 7:48 pm
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