Hi Michael,

\\re :Modo cube

So the whole trick is to explain that IF the normal vertex channel WAS actually correctly read by Octane, we should get a flat shaded cube, without any smooth group/edge split system.

... but that's something I allready tried to explain, without real succes ...

I don't know what to think about Radiance's normal test from blender, where he actually invert or move the normal manually before exporting the model.
The model is actally looking like a mess in Octane, inverted normal seems indeed inverted ... so somehow ... Octane is reading the vertex normal direction from the .obj file.