Some more idle thoughts [1] refining what I wrote elsewhere on this thread: FreeCAD Arch is a smart pivot: they just need to do a hard fork from the rest of Fr

Some more idle thoughts [1] refining what I wrote elsewhere on this thread: FreeCAD Arch is a smart pivot: they just need to do a hard fork from the rest of FreeCAD and replace Open CASCADE with CGAL. History based parametric MCAD is hugely resource intensive and the 800lb gorilla SOLIDWORKS is formidable. Best idea stay away! If that doesn't put you off: (1) replace history based with direct modeling (2) have a single curved surface type of G1 (and approx G2) sheets of some closed set of implicit quartic surfaces - e.g. Dupin Cyclides or some appropriate generalization. Get very good at intersecting these! [1] I've exited all 3D. Even the areas with dynamic markets, such as 3D-printing and augmented reality, are oversupplied with talent.