In the past, people would model objects out of clay or plaster, now we use 3D printers, which allows us to print anything we want out of photo-hardening polymer. The first 3D printing equipment was built in the 1980’s. In 1981 Hideo Kodama of Nagoya Japan had designed the first 3D printer. There have been many different types of 3D printers, but the main differences between them are the materials that they use. Some of the printers use melted materials and others use soft materials. Before you begin printing you must create a virtual design of the object you want printed. The design is made in the Computer Aided Design file using the 3D modeling program. The printer takes the design and lays down the material in the shape of the object. I interviewed Caden C. about the printers and I asked him if they had some use in them or if they were a waste of materials. He said they had some use in them. I also asked him if all schools should have 3D printers and he said, ”It should be up to the schools if they really need to make some models, then they should get one otherwise, it is not necessary”.