I'm in no way proficient in TinkerCad but I have been frustrated lately with not being able to make small adjustments to things like curve radii or even to create my own curves. There just aren't enough adjustment points like in a full on cad program. I've seen AutoCAD in use and though it is far too complicated for me to learn (and WAY beyond what I could afford) the multiple adjustment points is all I'm after. Is there another FREE program that's as intuitive as TinkerCad but has just a little more functionality? I'm starting to finally put my daughters 3D printer to use and designing a few things but could do so much more with a program just one step beyond....