3D printer is a process of Rapid Prototyping (RP). However, traditional printers print ink onto paper to form two-dimensional plane drawings, while three-dimensional printers use liquid photosensitive resin materials, molten plastic filaments, gypsum powder and other materials to achieve layer-by-layer accumulation by spraying adhesives or extrusion. Superimpose to form a three-dimensional solid.
3D printing, also known as three-dimensional printing, is explained on Wikipedia: a type of rapid prototyping technology, which uses powdered metal or plastic and other adhesive materials to construct zero objects through multi-layer printing layer by layer. . Mold making, industrial design is used to build models, and is now developing into product manufacturing, forming "direct digital manufacturing". Some high-value applications (such as hips or teeth, or aircraft parts) already have printed parts. "3D printing" means the popularity of this technology.
In the mid-1980s, SLS was developed and patented by Dr. Carl Deckard at the University of Texas at Austin in a project sponsored by DARPA. In 1979, a similar process was patented by RF Housholder, but not commercialized.
The term "3D printing" was coined by MIT in 1995, when graduates Jim Bredt and Tim Anderson modified the inkjet printer solution to one that squeezed a confinement solvent into a powder bed, rather than squeezing ink. Scheme pressed on paper.