3D is a technology that makes it possible to create objects from a plastic strand or filament. First a design is created using computer software, and then this design is sent to the 3D printer. Instead of using paper, a 3D printer uses a strand of plastic. The plastic is heated until it melts, and then very small pieces of the plastic are deposited onto a printing bed. The printer keeps doing this until it builds the shape that the user has designed. 3D printing can be used for many different types of projects: art, games, robotics, engineering, and the list goes on.