Getting wobbly perimeter lines
 
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Ninju
(@ninju)
Active Member
Getting wobbly perimeter lines

Hello PrusaSlicer folks,

Using PrusaSlicer (2.9.4) with a Prusa XL 5TH (6.2.6+8948)

Getting strange wobbly lines on the perimeter of my box print (it is a Fusion 360 model exported as STL and add to PS project)

To see if its an issue with printer hardware (tensioning, head alignment, etc...) I recreated a version of the object using PrusaSlicer primitives (just a Box part with a negative volume in the middle) and it printed fine

Any ideas?

(I can provide the .3mf file if need be)

Posted : 02/02/2026 10:22 pm
jan.d.slay
(@jan-d-slay)
Reputable Member
RE: Getting wobbly perimeter lines

The solution is almost in the question.

Please export the “problem part” in STEP format and try again.I suspect you chose a “poor resolution” when creating the STL.

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Posted : 04/02/2026 8:34 am
Ninju
(@ninju)
Active Member
Topic starter answered:
RE:

Hello!

Posted by: @jan-d-slay

The solution is almost in the question.

Please export the “problem part” in STEP format and try again.I suspect you chose a “poor resolution” when creating the STL.

When you say 'choose poor resolution when creating the STL" what do you mean?

I used Fusion360 to create design and used the File:Export menu option

I don't see any way to adjust the resolution

So is STEP format a better export format to use all the time?

This post was modified 2 weeks ago by Ninju
Posted : 07/02/2026 2:38 am
jan.d.slay
(@jan-d-slay)
Reputable Member
RE: Getting wobbly perimeter lines

I just realized that I wanted to add something. I didn't mean exporting directly from the CAD component via this menu from your screenshot, but rather by right-clicking on the relevant object in Fusion360.

The option is called "Create mesh," and then you can adjust the resolution in the settings.

That's what I meant.

Quick start printing for Prusa XL and Prusa Core One
Comfortable display working height on the Prusa Core One
Reducing metallic resonance noises on the Prusa Core One

Posted : 07/02/2026 8:06 am
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