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Flat items created by computers can be printed on common printers that we use every day. Despite using new printing materials, 3D printers fundamentally operate on the same principles as regular printers. Ordinary printers use ink and paper as their only printing media, whereas 3D printers can use a variety of media, including metal, ceramic, plastic, and sand. Once the printer and computer are connected, the "printing materials" can be placed layer by layer under computer control, eventually transforming the digital blueprint i... more