3D Systems, headquartered in Rock Hill, South Carolina, is a company that engineers, manufactures and sells 3D printers. Chuck Hull, currently the CTO and former president, patented stereolithography in 1986. 3D Systems creates product concept models, precision and functional prototypes, master patterns for tooling, as well as production parts for direct digital manufacturing. 3D Systems uses proprietary processes to fabricate physical objects using input from computer-aided design and manufacturing software, or 3D scanning and 3D sculpting devices.3D Systems' technologies and services are used in the design, development and production stages of many industries, including aerospace, automotive, architecture, health care, dental, entertainment, recreation and consumer goods. 3D Systems offers professional- and production-grade 3D printers, in addition to a line of personal 3D printers and 3D-printed consumer products, supported by the affiliated online forum Cubify. 3D Systems is notable within the 3D printing industry for developing stereolithography and the STL file format.