Good points. I was trying to think of unusual programs with non-standard approaches. Perhaps rather than FreeCAD either BRL-CAD, or maybe the recently announc

Good points. I was trying to think of unusual programs with non-standard approaches. Perhaps rather than FreeCAD either BRL-CAD, or maybe the recently announced Dune 3D: https://news.ycombinator.com/item?id=40228068 https://news.ycombinator.com/item?id=40228068 Also, Blender w/ CADsketcher (the Solvespace solver) is quite good: https://news.ycombinator.com/item?id=34856383 https://news.ycombinator.com/item?id=34856383 Though maybe Solvespace would be a better match? https://news.ycombinator.com/item?id=33571555 https://news.ycombinator.com/item?id=33571555