Hello everyone!
I have been experiencing a persistent issue for quite some time now. Whenever I print larger designs, the quality significantly deteriorates the higher it is printed. As you can observe in the picture, the top part appears distorted and it seems like the printhead fails to align properly with the underlying layers. Interestingly, when I print a single item, the quality is perfectly fine.
I have already examined and ensured proper tension in all the belts. I have also checked the hotend and cooling system, which are functioning correctly. Additionally, the spindles appear to be in good condition as well.
Any help is appreciated!
Sounds like heat creep.
Hi Kylian, Are all these printed in the same orientation? What happens if you print one rotated 90 (and 45) degrees on the vertical axis?
I find it curious how the artifacts are more pronounced on one side than on the other (last image).
The problem occurring with tall prints make me think this could be inertia from the bed slinging. How badly does the printer shake? Do you print using the spool on top of the printer? If so try with the spool to the side. I’m fond of this spool holder https://www.printables.com/model/120198-spool-holder
Feel free to follow up with more questions. Don’t hesitate to reach out to Prusa support either, they’re great.
Rotating the part does not change the artifacts sides. I initially though that because the artifacts are more on one side. it would have something to do with the belt tension. But i checked this and tightened them up without any effect.
the spool does not sit on top of the printer. its sits next to the printer with a ptfe tube going in. Wouldnt the inertia artifacts be visible in the single on that got printed just fine?
I have posted this before on the Prusa forums some months ago without much luck. Me and the people could not find what was causing the issue. I set the printer aside for a while because i was a bit done with it for the moment. Just picked it up again to look in to the issue once more.
No change with rotation is weird. Do you mean the artifacts are on the same side relative to the parts, or relative to the printer?
Is this a modified MK3S/S+? I see the extra screen, but what about the PTFE tube, is that from an MMU?
If the inertia is from the relatively fast movements between parts, no. Printing moves are more gentle than movement-only moves.
Edit: It may be worth trying to print at 50% speed (knob anti-clockwise during printing) just to see if that changes anything.