I strongly recommend taking a look at SolveSpace[1] and doing at least the first tutorial. It takes maybe 30 minutes and gets you knowing enough to be dangerous

I strongly recommend taking a look at SolveSpace[1] and doing at least the first tutorial. It takes maybe 30 minutes and gets you knowing enough to be dangerous. SolveSpace is missing a lot of advanced features, but is reliable and quite adequate for many practical parts you might wish to print or CNC. [1] http://solvespace.com/index.pl http://solvespace.com/index.pl