1. Introduction 2. History
1. Introduction 3D printing is a form of additive manufacturing technology where a three dimensional object is created by laying down successive layers of material. It is also known as Additive manufacturing. A method of Additive Manufacturing that adds material to an object layer by layer to create the final product. It can “print” in plastic, metal, nylon, and over a hundred other materials. A 3D printer is a type of industrial robot. There are many uses of 3D Printing e.g. architecture, construction, industrial design, engineering, dental and medical industries, biotech (human tissue replacement), fashion, 3D Printer footwear, jewelry, education, geographic information systems, food, and many other fields. The cost of 3D printers has decreased dramatically since about 2010, with machines that used to cost $20,000 now costing less than $1,000. For instance, as of 2013, several companies and individuals are selling parts, with prices starting at about €400/US$500. 2. History The technology for printing physical 3D objects from digital data was first developed by Charles Hull in 1984. He named the technique as Stereo lithography and obtained a patent for the technique in 1986. In Stereo lithography layers are added by curing photopolymers with UV lasers. He also developed the STL (Stereolithography) widely accepted by 3D printing software. Charles Hull STL is a file format native to the CAD (Computer Aided Design) software created by 3D Systems. Stereolithography is a "system for generating three- dimensional objects by creating a cross-sectional pattern of the object to be formed. STL is also known as Standard Tessellation Language.
[Show full text]