I have got an problem with assembling an open inventor file out of a given
one by applying some transformations on it. Actually the main problem is,
that in the orgin file  the triangles have different colors, so i used
one node for every triangle in the output file  to supply the material
properties. But if viewing the output  (should be a helix) the different
colors are missing.
Can anybody tell my what i have done wrong?
Tanks for help!
[xpost & f'up2 comp.graphics.api.inventor]