Exported 3mf file non-manifold, STL file is fine. Maybe not a Rhino bug?

[jet]

Hi,

Made a simple object, exported it in 3MF to print on my Bambu X1C. X1C threw a warning about 28 non-manifold edges, I re-exported in STL and that loaded just fine.

This might not be a Rhino bug – I worked in consumer electronics startups for over 20 years, it’s always the other vendor’s fault.

Attached are the two files:
sw-929-clip-1.3mf (42.2 KB)
sw-929-clip-1.stl (128.2 KB)

[martinsiegrist]

[jet]

ah, I didn’t think to run Check on the object. Still new to 3MF files.