[David]

I already can do the basic functions. I could make everything look accurate, down to the nuts and bolts, but i want to learn the proper ways of doing things. Making parts and assemblies isn't the problem (I once proved an engineer wrong using inventor when he was using a pencil and paper) Its actually doing it correctly is what i am having a problem with. I can line everything up, and assemble it, but its the more advanced features, mostly stress analysis and making welds that actually work that is my problem.