Ordinary printers used in daily life can print flat objects designed by computers, and so-called 3D printers work basically the same as ordinary printers, 3d printed injection mold ，but the printing materials are slightly different.

The printing materials of ordinary printers are ink and paper, while 3D printers are equipped with different "printing materials" such as metal, ceramics, plastics, sand, etc., which are real raw materials. Materials" are layered on top of each other, eventually turning the blueprint on the computer into a physical object.

Simply put, a 3D printer is a device that can "print" real 3D objects, such as printing a robot, printing a toy car, printing various models, and even food.

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