Bug in stl import

[raul3dp 1]

Hi,

I am trying to import a stl model into cura, but it looks like it is not sliced correctly. This is the lid of a box and it should have an edge and then empty inside. It looks like cura is filing up the empty space. 

 

I am using version 4.5 on linux with default settings. 

Is this a bug or am I doing something wrong? I am quite new to cura and this model seems to be imported well in Slic3r. 

 

Attached stl file and the screenshots of the model + sliced. 

 

Thanks

 

 

lid3-rotated.stl

[gr5 2,172]

This is a common issue.  If you created this in sketchup go back to your drawing and note that some walls are white and some are gray - right click on the gray walls and select "reverse faces".

 

Best to fix your model.

 

Alternatively look at all the mesh features in cura - try unchecking "union overlapping volumes"

[raul3dp 1]

Thanks for your answer. I am using blender and it has a similar functionality. You can flip faces using the following steps: https://www.katsbits.com/codex/flip-normals/

Now cura slices it correctly!

[gr5 2,172]

Thanks for posting this!  I just added your link to my list of tricks for future people with this issue.

[ahoeben 1,948]

MeshTools also has an option to "fix" the normals. In case of flipped normals it unflips them. I am considering making it an option to always fix normals on import, but that may slow down loading huge models.