shared vertices is not needed.

you can give 1 vertex and 10 vertex normals and then as much faces that reference it, my importer reads those fine.

the strangeness of it all is that models exported with 'high quality vertex normals' in the same moi3d like unwelded fashion render fine with octane, but not the moi ones.

anyways the cylinder you gave renders fine, no facets.
i will test the superball model in unwelded form.

i'm still finishing my vertex normal interpolation via smoothgroups option though, a lot of users have models that are 'welded' and have the usual shading artifacts.

anyways, that will be for tomorrow.

night night.

Radiance