With FreeCAD you can import the OBJ and with the "Workbench part" convert it in part with the command create shape from mesh, and then save the file by exporting the selections as a STEP and import your reference in Moi3D.

this is an example of poly obj with triangles, convereted and imported.



but be careful because if the mesh is too dense you will have problems.
Greetings

Hi,
This is a direct bridge to blender I use and it works great.
https://github.com/TitusLVR/BMOI_Connector
Cheers
Barry

@Barry
If an object's modification is made in one prog does it "mirroring" automatically on the other prog ?
A sort of permanent link...

Hi Pilou,
No it doesn't.
Cheers
Barry

Thanks to all...
I have the BMOI export import installed ...but I need to install it in Blender as well....going to give it a try..

Subd create works as well!



Where can I get this Moi theme?https://camo.githubusercontent.com/7a24fdd0b706b5df981634b5e30a92b1fda64e9c51441120dc8a598f5675d9b9/68747470733a2f2f692e696d6775722e636f6d2f736a4c50336b382e6a7067

Looks awesome dark greenish?

Thank you!