3D printing or additive manufacturing is a process of making three dimensional solid objects from a digital file. The creation of a 3D printed object is achieved using additive processes. In an additive process an object is created by laying down successive layers of material until the entire object is created. Each of these layers can be seen as a thinly sliced horizontal cross-section of the eventual object.
3D printers capable of outputting in different colour and multiple materials already exist With effects on energy use, waste reduction, customization, product availability, medicine, art, construction and sciences, 3D printing is changing the manufacturing world as we know it.