finally ! :)

thanks for that michael, now it makes sense.

the model paq gave me had the weld option enabled i presume ?

i've been trying to solve the issue of people handing models to octane without duplicate vertex normals for angles.
I can actually render those welded models fine if i use the smoothgroups to define the interpolation boundaries of the given vertex normals, that's what i'm trying.

paq -> can you give me a version of the superball OBJ with the weld disabled then pls ?

if there are any residual normal interpolation issues with a propper model i need to investigate it. it could be due to the precision issue bug i fixed yesterday.

i just tried the cylinder model you gave me and that one renders fine, it has indeed got duplicate vertex normals on the cylinder edges at the top/bottom.

Radiance