Use AutoCAD's "Extrude" and "Revolve" commands to turn 2-D designs into 3-D models. "Extrude" is how 3-D modelers to refer to the technique of stretching a 2-D shape into 3-D space. AutoCAD performs ...

I want to write an AutoLISP routine to help me unfold some 3D assemblies into flat (exploded) layouts. Yes, there are software packages out there that can do this automagically for 3D solids, but I ...