Slicer creating a non-planer surface when laying mesh on a flat face.

[jw24425]

Description of the bug

Project file & How to reproduce

After laying the model flat on either side, the slicer produces a non-planer surface which requires supports.

I've included a copy of the mesh file with which it exhibits this problem.

I ran it through three different slicers: PrusaSlicer 2.7.4; plus Cura 5.4.0 and ideaMaker 4.2.1.5320 and I can only get PrusaSlicer to show that strange behaviour.

Checklist of files included above

• Project file
• Screenshot

Version of PrusaSlicer

2.7.4

Operating system

Windows 11

Printer model

Creality Ender 3

[neophyl]

Cant see any attached mesh. You need to zip up files for them to be a valid attachment.

[jw24425]

I'm unsure of how to add it to the github bug report, but I've attached a copy of a zip file with the .3mf file on this email/post.
12651.zip