It has a huge library of models, from screws and furniture to entire buildings, that can be easily imported into any project. The biggest reason for its popularity is likely the SketchUp 3D warehouse. While it is primarily used for architectural rendering, SketchUp can also be used to create robotics, sculptures, and 3D printable objects. If you want to learn this application with videos, then download this tutorial for free. Draw in 3D,” most of the workflow is easy to grasp and can be learned in minutes. As indicated by their motto, “Think in 3D. Launched in 2000, SketchUp is a very popular CAD (computer-aided design) program that offers a simple and intuitive user interface.