Another simple libre CAD program is SolveSpace. It works more like Autodesk Inventor - you draw 2D sketches, pull them into 3D in different ways, repeat, and ad

Another simple libre CAD program is SolveSpace. It works more like Autodesk Inventor - you draw 2D sketches, pull them into 3D in different ways, repeat, and add constraints to features along the way. Very good for the dimensionally-accurate stuff people model in Fusion360. (Nearly useless, I might add, for organic stuff like the mosquito in the Dust video.) http://solvespace.com/index.pl http://solvespace.com/index.pl