For anyone looking for an open-source parametric CAD system that is robust and functional enough to use on real projects, try SolveSpace[1]. [1]: http://solves

For anyone looking for an open-source parametric CAD system that is robust and functional enough to use on real projects, try SolveSpace[1]. [1]: http://solvespace.com/index.pl http://solvespace.com/index.pl For some reason it's barely known about, which is a shame as it's by far the most powerful open-source CAD system I've used. The parametric modelling system is very similar to that of commercial CAD software.