Program moi works like this

 From:  chrisd (CHRIS_DORDONI)
5716.17 In reply to 5716.16 
I would agree with the others that the best way to approach this may not be with a CAD tool but a polygon modeler.

However, as there is a need to have this kind of work in nurbs/CAD format for CNC machining, there are ways to convert polys to nurbs.

You could look at: (for 3dsMax) (for Rhino)

or these VERY expensive solutions such as: