3D Printing

        What is 3D Printing? T he action or process of making a physical object from a three-dimensional digital model, typically by laying down many thin layers of a material in succession. Application of 3D printers. 3D printers are used in many industries, like  aerospace engineering , dentistry, archaeology, biotechnology, and information systems. As an example, a 3D printer might be used in the field of archaeology to physically  reconstruct ancient artifacts  that have been damaged over time.