Actually I work in a company dealing in playground equipment. Since more than one year I am creating there 3D models. Thanks for that I know how to built it to avoid later problems during rendering or during edition. I have full commercial version of software for creating 3d models.- SketchUp Pro 2020.I have also V-Ray Next 5. I can make model based on pictures with dimension, .dwg files, hand drawings. The more accurate data I will recive, the more accurate the model will be.