3D printing (3DP) is a rapid prototyping technology. it is a digital model based on the file, using powdery metal or plastic and other adhesive materials, and through the layers of the way to build objects technology.
Usually,3D printing is using a digital technology material printer. Prototype 3D printing often used to manufacture models in the mold manufacturing, industrial design and other fields ; and gradually used for the direct manufacture of some products. There are already some printed parts have been used from this prototype 3D printing technology . The technology is used in jewelry, footwear, industrial design, construction, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms and other fields.