Hi Tom, re:

> So one workflow to transform a subdivided model designed with a polymodeller
> into a nurbsoject in MOI would be : <....>

Well that's a "possible" workflow, but many times you would probably be better off just keeping that model in the poly modeling program throughout and never bringing it into MoI at all - MoI's strengths are more in the area of mechanical object design and not so much in organic creature modeling. It's a better fit to just create models like that in your poly modeling program and never try to bring them into MoI at all, it's not the kind of model that CAD programs are generally good at doing.

If you did want to try it, you could maybe stop at your step #3 though, and just keep the result of max's sub-d command as your final result.

The focus of MoI is in building profiles primarily from 2D profile curves - if your object is not well defined just by 2D profiles probably it's an organic model that would be better done all in a poly modeling program without Moi being involved at all.

- Michael