3D PRINTING WITH FDM: How it Works
A 3D printer is a machine that creates objects from plastic or other materials using an additive manufacturing process. Additive manufacturing produces objects in a succession of layers from the bottom, up. This is the opposite of traditional subtractive manufacturing processes, which produce objects by cutting material away from a block to create the shape desired. The term 3D printer was a trademark of Stratasys Inc, which, in 1999, the company allowed to enter the public domain and become a generic industry term.