[namibj]

Yes, of course. But I'm specifically interested in the design side, because the analysis side is already handled by open and/or free software, due to it being so close to what a small university research group might just publish or adapt for unconventional FEM analysis.

Design software is much less easy to find, though.

[Woberto]

Ah, sorry. Have you tried rhino 3d? There are some nice additions to it like grasshopper