I tried to slice an stl file using the PrusaSlicer console and I got the No layers were detected. You might want to repair your STL file(s) or check their size or thickness and retry. message. I tried repairing the model with 3 different services and I still get the same error. When I load the fixed stl file into the PrusaSlicer gui, it doesn't say that the model is broken. How can the console and gui give 2 different results and how can I fix this?

Here's an image of the model being loaded into the gui version. It states that the model is broken but was automatically fixed.
broken model
Then I manually fixed the model using Netfabb and the model is no longer broken according to the gui version.
fixed model
Yet when I try to slice the repaired model using the console, it fails again. error message

PrusaSlicer version is 2.3.0 on Windows 10.
You can find the stl and repaired stl here.

  • $\begingroup$ Cura says, those files are perfectly fine.. $\endgroup$
    – Trish
    Apr 6, 2021 at 16:30
  • $\begingroup$ Yes I know that the files are fine, I don't get why the console slicer is still producing that error. $\endgroup$
    – Brent
    Apr 6, 2021 at 16:59
  • $\begingroup$ degenerate faces are faces that do have no surface area... maybe internal geometry? $\endgroup$
    – Trish
    Apr 6, 2021 at 19:26

1 Answer 1


Still don't have an actual answer as to why repairing the stl file didn't seem to work, but since my stl file was a combination of different stl files I tried repairing the individual stl files before combining them, which resolved the problem.

  • 1
    $\begingroup$ Are you printing multiple parts? Try selecting all, merge then slice. $\endgroup$
    – Guest
    Dec 3, 2021 at 22:56
  • $\begingroup$ commenting to confirm that Selecting all then merging made it work to slice my stuff. I was adding generic cylinder to make a small ad-hoc support on my model $\endgroup$ Jun 18, 2023 at 2:21

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