How about Onshape Free? https://www.onshape.com/products/free https://www.onshape.com/products/free We've used it internally for some fun demo/hack projects an

How about Onshape Free? https://www.onshape.com/products/free https://www.onshape.com/products/free We've used it internally for some fun demo/hack projects and have had a good experience with it.