Before revision: How it works Before the actual printing process can begin, a 3-D model of the object to be printed must be created on CAD, a software that allows a designer to create 3-D models on a computer.
After revision: Process Before the actual printing process can begin, a 3-D model of the object to be printed must be created on CAD, a software that allows a designer to create 3-D models on a computer.