Artifact in a drawing

[ebolisa]

Hi,

I designed a simple horn using additive loft, looks ok and error free in FC but when I export it to prusaslicer, I get a hole where it curves

What's causing it?

TIA

Code: Select all

OS: Windows 10 Version 2009
Word size of FreeCAD: 64-bit
Version: 0.20.2.29177 +426 (Git)
Build type: Release
Branch: (HEAD detached from 0.20.2)
Hash: 930dd9a76203a3260b1e6256c70c1c3cad8c5cb8
Python 3.8.10, Qt 5.15.2, Coin 4.0.1, Vtk 8.2.0, OCC 7.6.3
Locale: Spanish/Spain (es_ES)
Installed mods: 
  * Assembly4 0.12.6
  * Curves 0.6.8
  * dodo 1.0.0
  * fasteners 0.4.55
  * Lithophane
  * sheetmetal 0.2.63
  * ThreadProfile 1.84.0

[Roy_043]

The wall thickness in that area is less than zero. If you change the Lighting of the Body to "One side" and change its Transparency to zero you will see the same artifact in FreeCAD.

[ebolisa]

The wall thickness in that area is less than zero. If you change the Lighting of the Body to "One side" and change its Transparency to zero you will see the same artifact in FreeCAD.

Thanks, I kind see that now but where's the option of "Lighting" at?

[Roy_043]

Select the Body and go to the View tab in the Combo view.