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prusa3d / Prusa-Firmware-Buddy

Firmware for the Original Prusa MINI, Original Prusa MK4 and the Original Prusa XL 3D printers by Prusa Research.
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[BUG] Surface quality issues with input shaping, 5.1.0-beta XL firmware and 0.15 layers / 0.6 nozzle #3500

Closed ex-nerd closed 4 months ago

ex-nerd commented 11 months ago

Printer type - XL (2-tool, though only using a single tool here)

Printer firmware version - 5.1.0-beta

Original or Custom firmware - Original

Optional upgrades - No

USB drive or USB/Octoprint drive/Wifi

Describe the bug

Using 0.6 nozzle 0.15 "structural" setting with input shaping enabled in PrusaSlicer 2.7.0-rc1.

You can see from the photo below that there are prominent frequency bands in both the organic supports, and in the model visible behind it.

Additionally, there are some "shifts" (similar to this issue though my own shifts were not quite so dramatic) that cause a sort of bridging, but the filament doesn't seem to be extruded properly at the start of the bridge so it it just leaves a gloop of filament on the far end that snags on upper layers and risks tearing the support column apart (see photo ... that recovered itself but I spent a lot of time pausing the print and squeezing it back to shape by hand with a butane torch).

How to reproduce

Upgrade firmware in XL

Expected behavior

G-code

Sorry, I am not licensed to share the model publicly.

Crash dump file

N/A

Photo

Banding:

2023-11-21 11 21 40

Failed support "bridging" / partial layer shift:

2023-11-21 11 28 34

ex-nerd commented 11 months ago

My very long print finally finished and I ran a couple tests, even flashing the printer back to the alpha firmware and triple checking my belt tension. The surface issues are still present there, so this seems more likely to be an issue with the specific profile (I haven't used 0.15 with the .6 nozzle since before input shaping was available):

2023-11-22 20 33 49

And here are the relevant gcode and 3mf files for the updated test model:

ex-nerd commented 11 months ago

Stranger yet … I just tried a new version of this print with the regular (not input shaping) 0.6 profile "0.15 DETAIL" and it still exhibits these strange warbly lines (though not quite as pronounced).

I also checked with the 0.2 STRUCTURAL profile with input shaping, and the artifacts are almost completely gone. This suggests it's an issue with the profile. I don't know where to file a bug about that.

ex-nerd commented 11 months ago

Just for comparison, here's the same print (settings just "transferred" from the file I uploaded before when I changed the profile) at 0.2 STRUCTURAL with 0.6 input shaper profile. Still not perfect but so much cleaner then either of the 0.15 versions.

2023-11-23 00 46 27

github-actions[bot] commented 5 months ago

This issue has been flagged as stale because it has been open for 60 days with no activity. The issue will be closed in 7 days unless someone removes the "stale" label or adds a comment.

github-actions[bot] commented 4 months ago

This issue has been closed due to lack of recent activity. Please consider opening a new one if needed.