By saying “3D printing”, what are your first thoughts? Most people initially associate the phrase with ordinary (2D) printing on paper, but it is not. 3D printing is a three-dimensional application of material (filament) from which a 3D model is created. There are many different 3D printing technologies that you can read about here, but the most commonly used is FFF (Fused Filament Fabrication). 3D printing involves melting the filament, which is then applied to the build plate of the 3D printer by a guided nozzle moving along the X, Y, and Z axes. This is repeated layer by layer until the entire 3D model is created.