One layer is printed inverted (print air instead of part)

[nelstaar 0]

Hi,

I have Cura computing layer 106 inverted, It print in the air inside my piece and avoid printing the piece.

 

See attached GIF.

 

In low quality I don't have the pb.

 

Did any one already have this behavior ?

 

I did check in X-ray mode but all is good.

 

Cura 4.13.3 Linux 64bits
Ender 3

 

[nelstaar 0]

Attached file.

porte savon évier - bug.3mf

[obewan 37]

Tried your project file on cura 4.13 windows version and it sliced perfectly so not sure whats happening on your end.

 

[nelstaar 0]

On 5/26/2022 at 4:22 PM, obewan said:

Tried your project file on cura 4.13 windows version and it sliced perfectly so not sure whats happening on your end.

 

Good to know. Thx

[nelstaar 0]

I tried Cura 5.0.0 and I have the issue at super quality only.

 

It's gonna be a mystery.

 

[GregValiant 1,330]

On a lark I opened the model in MS 3D Builder and it reported an error.

This report is from https://formware.co/OnlineStlRepair.  There were some triangles added but that's it.

--> 0 Naked edges (?)
--> 0 Planar holes (?)
--> 0 Non-planar holes (?)
--> 0 Non-manifold edges (?)
--> 0 Inverted faces (?)
--> 0 Degenerate faces (?)
--> 0 Duplicate faces (?)
--> 0 Disjoint shells (?)
-> Repairing: 100.00%
----- Repair completed in 279ms ------
-> Vertex count changed from 112 to 300 (+188)
-> Triangle count changed from 220 to 596 (+376)

 

3D builder before repair

 

And after repair.  You can see where the triangles were added to the flats between the ribs.

 

[nelstaar 0]

Ok thanks for pointing https://formware.co/OnlineStlRepair.

 

I tried the .3mf file with Cura 5 on Windows and I got no issues !!

 

So I'll try fixed STL on Linux again and see.

 

To be continued ...

[nelstaar 0]

19 hours ago, GregValiant said:

On a lark I opened the model in MS 3D Builder and it reported an error.

This report is from https://formware.co/OnlineStlRepair.  There were some triangles added but that's it.

--> 0 Naked edges (?)
--> 0 Planar holes (?)
--> 0 Non-planar holes (?)
--> 0 Non-manifold edges (?)
--> 0 Inverted faces (?)
--> 0 Degenerate faces (?)
--> 0 Duplicate faces (?)
--> 0 Disjoint shells (?)
-> Repairing: 100.00%
----- Repair completed in 279ms ------
-> Vertex count changed from 112 to 300 (+188)
-> Triangle count changed from 220 to 596 (+376)

 

3D builder before repair

 

And after repair.  You can see where the triangles were added to the flats between the ribs.

 

I guess OnlineStlRepair is make a safer 3D model.

[nelstaar 0]

Fixed STL fixed the issue.

 

Thank you every one. 👍

 

(original STL exported from Freecad)

Edited June 8, 2022 by nelstaar