Notifications
Clear all

Y axis crashes and layer shifting  

  RSS
mb
 mb
(@mb-2)
Active Member
Y axis crashes and layer shifting

MK3S+

Prusament PETG

I'm printing two instances of  the same part, total time about 2:45. Every run, I'm getting at least one and usually 3-4 Y Axis crashes that ultimately cause a layer shift and make my prints unusable. I haven't seen any blobs or irregularities in the parts that would cause a crash, so I'm wondering if I have something out of calibration somewhere. 

To be clear, I don't have adhesion problems.

This has become more pronounced since I started running the Jet Black Prusament PETG, but it had happened before.

 

Thanks,

mb

Posted : 26/03/2023 6:27 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Y axis crashes and layer shifting

does the Y axis move smoothly when moved by hand?

there should not be any jerkiness or grittiness in the movement. 
make sure the Y axis wiring loom is not catching on anything

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 : 26/03/2023 7:01 pm
mb
 mb
(@mb-2)
Active Member
Topic starter answered:
RE: Y axis crashes and layer shifting

Y Axis moves easily by hand. Wire bundle is free.

Posted : 26/03/2023 7:14 pm
IPIND 3D
(@ipind-3d)
Estimable Member
RE: Y axis crashes and layer shifting

There are a number of long running threads where this has already been discussed along with lengthy troubleshooting.

Posted : 26/03/2023 8:16 pm
fuchsr
(@fuchsr)
Famed Member
RE: Y axis crashes and layer shifting

What's your infill setting?

Crashes can be caused by the nozzle hitting infill, especially if using infill patterns such as grid that where filament crosses within a layer.

Posted : 26/03/2023 8:23 pm
mb
 mb
(@mb-2)
Active Member
Topic starter answered:
RE: Y axis crashes and layer shifting

Believe it or not, I searched for this before asking. I'd appreciate a link or two if you have them.

Posted : 26/03/2023 9:16 pm
mb
 mb
(@mb-2)
Active Member
Topic starter answered:
RE: Y axis crashes and layer shifting

Infill for this project is set at 50%. However, the crashes often as not occur near the end of the print after the top layers are being printed, so the infill is no longer exposed.

Posted by: @fuchsr

What's your infill setting?

Crashes can be caused by the nozzle hitting infill, especially if using infill patterns such as grid that where filament crosses within a layer.

 

Posted : 26/03/2023 9:53 pm
misan
(@misan)
Member Moderator
RE:

You can check the knowledge base; this is one of the articles about layer shifting: https://help.prusa3d.com/article/layer-shifting_2020   or nozzle crashing: https://help.prusa3d.com/article/crash-detection_2100

This post was modified 11 months ago by misan
Posted : 27/03/2023 6:22 am
ronnie12342003
(@ronnie12342003)
Estimable Member
RE: Y axis crashes and layer shifting

turn of crash detection hi have done since day one never get any layer shift 

 

Posted : 30/03/2023 4:57 pm
karl-herbert
(@karl-herbert)
Illustrious Member
RE: Y axis crashes and layer shifting

I have installed Hiwin's on my MK3, which runs absolutely smoothly. Nevertheless, I occasionally received a crash notification and for this reason I deactivated the crash detection. Since that time no problems anymore.

But it only makes sense if hardware errors and incorrect slicer settings can be excluded. Sense or nonsense of deactivating crash detection can be discussed.

wbr,

Karl

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen.

Posted : 30/03/2023 5:47 pm
mb
 mb
(@mb-2)
Active Member
Topic starter answered:
RE: Y axis crashes and layer shifting

I elected to turn off crash detection after watching the printer rehome after a crash with about 10 minutes to go and there was nothing wrong with the part. No burrs or blobs, no infill to catch...nothing. Since turning it off I've been great.

Posted by: @ronnie12342003

turn of crash detection hi have done since day one never get any layer shift 

 

Posted by: @karl-herbert

I have installed Hiwin's on my MK3, which runs absolutely smoothly. Nevertheless, I occasionally received a crash notification and for this reason I deactivated the crash detection. Since that time no problems anymore.

But it only makes sense if hardware errors and incorrect slicer settings can be excluded. Sense or nonsense of deactivating crash detection can be discussed.

wbr,

Karl

 

Posted : 30/03/2023 5:51 pm
IPIND 3D
(@ipind-3d)
Estimable Member
RE:

The other big thread on this issue is broken and can't be added to any more. 🙁

Y-Axis fake(?) Crash detections - let's debug

I have built an enclosure and moved all my electronics into a separate bay that is force fan cooled and put heatsinks on the stepper drivers as heat appeared to be the problem. I live in an area where the ambient air temp is frequently over 35C, so everything crammed into the stock electronics box had no airflow - especially with all the excess cabling.

I turned crash detection back on it and thought it had solved the issue as I had no crashes for about a week. But, it's started again big time. 🙁   Up to 50 per print.

It would appear that after 20 crashes, it pauses the print awaiting user input, which has cost me many hours on some prints.

I don't like having the crash detection off. I very nearly ended up with a disaster a year or so ago when a roll of filament jammed. The extruder nearly snapped the spool holder off!

I think I'll try replacing the Y axis motor as this appears to have resolved the issue for a number of other people.

Ben.

This post was modified 11 months ago 2 times by IPIND 3D
Posted : 30/03/2023 8:20 pm
Diem
 Diem
(@diem)
Illustrious Member

Check your idler pulley first.

Cheerio,

Posted : 31/03/2023 12:15 am
Share: