3D printing (3DP) is a kind of rapid prototyping technology. It is a technique for constructing objects by layer-by-layer printing based on digital model files and using adhesive materials such as powder metal or plastic.
3D printing is usually done using a digital technology material printer. It is often used in the manufacture of molds in the fields of mold manufacturing, industrial design, etc., and is gradually used for the direct manufacture of some products. There are already parts printed using this technology. The technology is used in the 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.