3D printers produce solid three-dimensional objects and models from  digital files. These digital files convey the surface of the solid model  as a series of triangles using Standard Triangle Language (STL). The 3D  artists produce these digital files using a variety of technologies,  including 3D modeling and 3D scanning.The professional 3D printing service providers convert real-world objects into 3D models using a short-range,  medium-range, or long-range 3D scanner. But each of these 3D scanners  uses a specific 3D scanning technology. The 3D scanning technologies differ from each other in many aspects. Also, each 3D scanning technology has its own pros and cons.