Computer-aided design (CAD) means using computer software to make objects for the real world. If you want to make anything with a machine, you must first draft your design in 3d. For this challenge, design your own toy or sculpture or part using CAD. Tinkercad is a free online software that’s easy to use. Create your own 3D models and submit a screenshot of your design. This project solves a challenge for the Rapid Prototyper Skill.