MK3S recalibrated himself during print, after losing his home point. Is that normal?
 

MK3S recalibrated himself during print, after losing his home point. Is that normal?  

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JF
 JF
(@jf-3)
New Member

Hello everyone, 

today I recognised a strange behaviour of my MK3S and I’m not sure where it comes from. Maybe I could need some help.
Recently I moved in a small student apartment so I started building  a smart enclosure before I burn the hole place down. 
While waiting for parts, I decided to renew my printer. First I updated my Prusa Slicer followed by the printer firmware, I cleaned  and greased all bearings, I changed nozzle and PTFE tube, I reassembled the printer and successfully passed the assembly check. Then I checked the belt tension, adjusted E-steps, layer height and extrusion multiplier and finally printed the first XYZ-Calibration Cube. 

During the print my MK3S stopped 4 or 5 times and after he went to the home point, he continued printing.
For me it looks like he lost his home point and had to recalibrate.

Because I never saw this behaviour before, I’m not sure where it’s coming from and if it’s good or bad.
So before I run straight into a bigger problem, I wanted to know if someone made the same experience before?

[video width="1920" height="1080" mp4="https://forum.prusaprinters.org/wp-content/uploads/2021/02/20210224_171528.mp4"][/video]

Yours faithfully  JF

 

Posted : 24/02/2021 4:31 pm
Diem
 Diem
(@diem)
Reputable Member

What do the Fail Stats say?

I suspect minor crashes, if so check your axes for full, smooth, travel.

Cheerio,

This post was modified 2 months ago by Diem
Posted : 24/02/2021 4:44 pm
JF
 JF
(@jf-3)
New Member

@diem

Hi you were right, I reprinted the Cube and stand the hole time next to the printer.
This time the printer only  stopped once and I was able to read the massage:  crash detected. 
Im not sure why the print crashed, for me it seems like the printer did nothing wrong and just stopped randomly.
Is there a way to get something like a crashlog from the printer? 

This post was modified 2 months ago by JF
Posted : 24/02/2021 7:10 pm
JoanTabb
(@joantabb)
Moderator

@jf-3

this could be a number of causes, If you didn't lubricate the linear bearings during assembly I would start by lubricating the smooth rods. 

https://help.prusa3d.com/en/guide/lubrication-tips_23200

 

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK...
Posted : 24/02/2021 8:21 pm
Diem
 Diem
(@diem)
Reputable Member

@jf-3

You have a crash summary on the printer.  It should indicate which axis is playing up.

Cheerio,

Posted : 25/02/2021 10:40 am
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