3D Model Prep for Printing

I need assistance in preparing OBJ files for 3D printing. The models are for prototyping purposes. Tasks include: - Scaling and resizing - Adding supports - Slicing and layering Ideal skills and experience:... (Budget: $250 - $750 USD, Jobs: 3D Animation, 3D CAD, 3D Model Maker, 3D Modelling, 3D Print Design, 3D Printing, 3D Rendering, 3ds Max)