A free subd to NURBS solution

 From:  amur (STEFAN)
8667.28 
Well, the T-Splines folks are not the only ones who created such technology.
The IntegrityWare folks created a subd to nurbs solution (patend pending) too.
ViaCAD has subd to nurbs tech also. And if you look at Github there are
also things called T-Splines.

Regards
Stefan