edta1

No way...I even used fusion 360 and cut off 1mm from the bottom just to get it "flush" and nothing changed. I activated the tree supports and cura doesn't show the supports either. FWIW I'm using Cura 5.3.0 Thoughts and comments most welcome. Thanks.

I'm trying to print the attached sizing ring. It should be a simple print. It's just a ring. Top and bottom should be flat. However cura slices it and thinks the model isn't flat. What happened here? What can I do to have cura slice it correctly? Sizing.stl