Pre-Shelled CAD Features Overlooked During Slice

[ThePrintOfDarkness 0]

I'm on Cura 5.3.1 trying to slice a prop.  I'm setup to print two walls and 10% infill with a 0.8mm nozzle.

 

In Fusion360 I pre-shelled the prop to 1.6mm wall thickness.  If I slice with infill the entire interior void infills and the bottom thread detail is omitted.  If infill is off I get the proper shell but still no bottom thread detail.

 

I've sliced/printed a similar design before without issue.

 

Any idea what setting could cause this?  Or perhaps something in the CAD model?

 

 

 

 

 

[GregValiant 1,255]

I would guess something in the CAD model or more likely, the exported file.  The "wants to fill with infill" is a clue that the model that showed up in Cura is not shelled properly.  

[ThePrintOfDarkness 0]

I use Fusion360 and export the models as STL.

 

Is there a better file format to use?  Or are there export setting I need to use or check for?

[GregValiant 1,255]

That's what I use but from Inventor.  Models from Fusion are usually fine.

The Fusion STL exporter may have user settings.  You would need to search for them.

If you can share the model then load it into Cura and use the "File | Save Project" command.  Post the 3mf project file here.

Edited June 5, 2023 by GregValiant