That last option seems to be a goer. It is difficult to create a nurbs version of what was very simple in sub-D. Ive tried this in Solidworks and found it virtually impossible. Good job Sidney Camm wasn't using CAD!

Very interesting, I did'nt know fillet could be used in this way with surfaces.

Marc

Steve,

That's true. Some shapes just naturally lend themselves better to different technologies. There's no "right" or "wrong" here. Sub-ds, nurbs and solid modeling can all do terrific stuff, if you play to their strengths but can be equally frustrating when you get down and dirty with their weaker sides.