When was 3D printing discovered?

The first 3D printer was created by Charles W. (Chuck) Hull in the mid-1980s. It used a technique called stereolithography, in which a UV laser is shined into a vat of ultraviolet-sensitive photopolymer, tracing the object to be created on its surface. The polymer solidifies wherever the beam touches it, and the beam "prints" the object layer by layer per the instructions in the CAD/CAM (computer-aided design/computer-aided manufacturing) file it's working from. Hull founded a company called 3D Systems, which made stereolithography machines. Stereolithography is an expensive commercial technique, with machines usually. Today 3D Systems sells 3D printers that use a variety of technologies and range from entry-level kits to advanced commercial systems, as well as providing on-demand parts services, mostly to business users. 3D printing are now increaing technology. For different filaments i can refer 3dpartistry. They provide all types of filaments.