Ah yeah, that thread is a good read. I have seen it before, in fact it was the first attempt I had with VD out of Zbr.
Following it I was able to get a result, but only from lots of tweaking.
Do you have a .mtl that actually shows vn values or do you assume they are in the
.mtl files?
I was thinking a similar thing, maybe I could copy past the vn into one file. But no when I open the .mtl its just container for maybe .bmp assignment?
Its another Zbr quirk but it would be good to have TG generate normals, or I wonder if there might be a way to assign these inside an .obj internal network?
Cheers
Ash