Overhang warnings on top not bottom?

[gothampixel 10]

Cura 2.3.0 PC

Overhangs in red are showing up on the top of this one file / model not the bottom, even after rotating. My other files seem to be ok. [/media]

[DaHai8 74]

You model is inverted (inside-out).

In .stl, walls have faces (inside and outside).

Your model has been inverted (inside faces are facing out, outside faces are facing in).

If you load your model into an editor (like Sketchup), it will show outside faces in white and inside faces in grey. I'm betting your model is all grey on the outside.

[reemaj3D 1]

I suppose there's an error in the STL file, have you checked and repaired the file? https://makeprintable.com/ is a good cloud based repair tool.

[nallath 1,123]

It has to do with the "winding order" of your model. It's not really a big issue. Cura will slice it just fine, the display is just a bit off.