Issue with PS 2.9.4
Every since upgrading to 2.9.4 I get a distinct artifact on my prints at about 13.6mm high. If I run the same part sliced in the previous version it doesn't do it. It's repeatable and even does it on completely different parts. The parts are circular and printed on a XL 5t and happens in the exact same spot everyone every time. I've tried changing setting in the slicer but nothing seems to change it unless I use an older version of the slicer. Then it disappears.
I've already started a thread on GitHub, but was curious if others have seen it. I attached a 3mf if someone else wants to try and print it.
RE: Issue with PS 2.9.4
Here was the same thing on a different print.
RE: Issue with PS 2.9.4
Can you provide an url to the GitHub issue?
See my GitHub and printables.com for some 3d stuff that you may like.
RE: Issue with PS 2.9.4
RE: Issue with PS 2.9.4
I reinstalled 2.9.2 resliced the original file that was giving me problems and it turned out perfect.
I'm convinced it's a slicer bug.
RE: Issue with PS 2.9.4
This issue is almost certainly caused by a PrusaSlicer 2.9.4 regression rather than a mechanical or printer-related fault. The artifact appears at the exact same Z height and angular position on different circular parts, is fully repeatable, and disappears when the same models are sliced with an older slicer version, all of which strongly indicate a slicer-generated G-code problem.
The behaviour points to a change in seam placement, extrusion planning, or pressure/flow handling introduced in 2.9.4 that affects long circular perimeters on the XL 5T.
Until the issue is resolved upstream, the most reliable workaround is to continue using the previous PrusaSlicer version and reference this repeatable behaviour in the GitHub thread to help with debugging and fixing the regression.
RE: Issue with PS 2.9.4
Some ideas to test as separate print each:
1. Tey to rotate the object and see if the defect also rotates
3. Try different infill or random seam?
2. Try disabling support for Arc?
See my GitHub and printables.com for some 3d stuff that you may like.
RE:
I there's no infill, it's all perimeters.
I can try the other things, but it's obviously a slicer problem. When sliced and printed from 2.9.2 there's no defect. So I didn't know why I would do other troubleshooting?
I've printed this part hundreds of times, and the issue didn't show until resliced in 2.9.4. then the problem appeared.
When re sliced in 2.9.2 the problem is gone.
RE: Issue with PS 2.9.4
Arc suport uses feature in the firmware and there were reports of issues with it, so changing orientation or turning the feature on/off could validate if the issue is in the slicing or in the firmware.
You could also look at the generated code in different views if there is any weird thing going on in that area.
Just a suggestions, because I assume devs will do it on their side anyway.
One more thing worth to report on github is the firmware version of the target printer.
See my GitHub and printables.com for some 3d stuff that you may like.