I have Keyshot2
It works well to save your model as an step .stp I found it easier than obj

All parts colored the same are linked, for example all diamonds white just drag the diamond color to 1 and all are done.
If you color your parts differently you can easily drop in different materials

cheers
shayne

Hi Michael,
Thanks a lot for your clear explanation, it works fine this way with the OBJ formatting.
Btw, Keyshot may have a look at reading in the NURBS information from Rhino directly.. hope they do it.

Cheers,
dwas.

Thanks to all for the response, in KS3 it turns out to work best exporting with the OBJ format.

Cheers,
dwas