Prusa Slicer Error Loading obj file.

[briansturgill]

Description of the bug

No matter what obj file I load (all generated by trimesh), I get prusa slicer reporting 3 open edges.
Even this simple .obj file (of a cube) gets this error.
I can't see anything wrong with this file. It has the expected 8 vertices and 12 faces.
Meshlab doesn't see a problem with it.

# https://github.com/mikedh/trimesh
v 0.00000000 0.00000000 0.00000000 0.94117647 0.90196078 0.54901961
v 0.00000000 0.00000000 10.00000000 0.94117647 0.90196078 0.54901961
v 0.00000000 10.00000000 0.00000000 0.94117647 0.90196078 0.54901961
v 0.00000000 10.00000000 10.00000000 0.94117647 0.90196078 0.54901961
v 10.00000000 0.00000000 0.00000000 0.94117647 0.90196078 0.54901961
v 10.00000000 0.00000000 10.00000000 0.94117647 0.90196078 0.54901961
v 10.00000000 10.00000000 0.00000000 0.94117647 0.90196078 0.54901961
v 10.00000000 10.00000000 10.00000000 0.94117647 0.90196078 0.54901961
f 2 1 5
f 3 5 1
f 2 4 1
f 4 2 6
f 4 3 1
f 4 8 3
f 6 5 7
f 6 2 5
f 7 5 3
f 8 7 3
f 8 4 6
f 8 6 7

Project file & How to reproduce

Just load the obj file onto the platter...

Checklist of files included above

• Project file
• Screenshot

Version of PrusaSlicer

Version 2.7.1+linux-x64-GTK3

Operating system

Ubuntu 22.04

Printer model

MK4 and MK3S+

[Jony01]

Thanks for reporting an issue.
Application need line end after last face(triangle indices) at the moment.
For fast fix, add new line(enter) after last face.
not_working_cube.obj
working_cube.obj

[briansturgill]

Thanks for the workaround!

[lukasmatena]

Fixed in 2.8.1-rc1. Closing.