<p>As suspected the error came from the Blender project. I tried using only Bezier curves and after joining and extruding the exported STL file behaves as expected.</p>

CC BY-SA 4.0
2023-06-10T14:06:05.053Z
2023-06-10T14:06:05.053Z
Andre S.
<p>I designed some line art figure in Blender using several Bezier Curves, converted them all to Meshes, joined them to one Mesh and converted it back to a Curve.
Then I extracted the curve and set a depth and at the end I saved it as a STL file.</p>
<p>Now in Cura (5.2.2.2) using the standard settings I have the following struggle:</p>
<p>When opening up the STL everything seems normal and as designed:</p>
<p><a href="https://i.sstatic.net/zEVzf.png" rel="nofollow noreferrer" title="Before slicing"><img src="https://i.sstatic.net/zEVzf.png" alt="Before slicing" title="Before slicing" /></a></p>
<p>But after slicing some lines/walls are ignored:</p>
<p><a href="https://i.sstatic.net/qSOll.png" rel="nofollow noreferrer" title="After slicing"><img src="https://i.sstatic.net/qSOll.png" alt="After slicing" title="After slicing" /></a></p>
<p>Judging by the preview visualization and time those inner structures disappear.</p>
<p>Do you know how to correct by tweaking the Cura settings?</p>
<p>I think the problem comes from the Blender Project due to the multiple converting and joining process but maybe I can save the current model instead of starting over.</p>

CC BY-SA 4.0
2023-06-09T13:28:29.847Z
Are you sure that the problem isn't caused by Blender, Blender is notoriously famous for creating incorrect models (inverted normals, non-manifold structures, etc.). You need to get your STL through a mesh fixer first, if the problem still persists, there may be a different issue at hand.
0scar
CC BY-SA 4.0
2023-06-12T10:55:04.390Z
Blender is however *way* better than SketchUp...
Trish
<creality-ender-3><ultimaker-cura><blender>
Missing walls in Cura after slicing
Andre S.
# Missing walls in Cura after slicing

(Asked by: username_0 on 2023-06-09)

I designed some line art figure in Blender using several Bezier Curves, converted them all to Meshes, joined them to one Mesh and converted it back to a Curve.
Then I extracted the curve and set a depth and at the end I saved it as a STL file.

Now in Cura (5.2.2.2) using the standard settings I have the following struggle:

When opening up the STL everything seems normal and as designed:

[![Before slicing](https://i.sstatic.net/zEVzf.png "Before slicing")](https://i.sstatic.net/zEVzf.png "Before slicing")

But after slicing some lines/walls are ignored:

[![After slicing](https://i.sstatic.net/qSOll.png "After slicing")](https://i.sstatic.net/qSOll.png "After slicing")

Judging by the preview visualization and time those inner structures disappear.

Do you know how to correct by tweaking the Cura settings?

I think the problem comes from the Blender Project due to the multiple converting and joining process but maybe I can save the current model instead of starting over.

**Tags:** creality-ender-3, ultimaker-cura, blender
> **Comments:**
> **username_1**: Are you sure that the problem isn't caused by Blender, Blender is notoriously famous for creating incorrect models (inverted normals, non-manifold structures, etc.). You need to get your STL through a mesh fixer first, if the problem still persists, there may be a different issue at hand.  
> **username_2**: Blender is however *way* better than SketchUp...  

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## 1 answers

### Answer by username_0 on 2023-06-10. Score: 2 | Accepted answer

As suspected the error came from the Blender project. I tried using only Bezier curves and after joining and extruding the exported STL file behaves as expected.


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