I am offering you to convert 2D drawing to 3D cad models, especially inventor files, or make 2D drawing from 3D models. I am writing now my university thesis. I will be a vehicle engineer, when I finish next semester. I worked with inventor for almost 3 years. I was in a Formula Student team, where i have designed suspension parts. I have made also FEM simulations, and have designed 3D printed parts.