3D Printing is an art process that uses Computer-Aided Drafting (CAD) to create a multi-dimensional object, convert it to a code that the printer reads to melt Plastic at a high temperature, and "draw" the design in micro millimeter layers to form an object.
The Plastic used is PLA. PLA a biodegradable, recyclable plastic derived from renewable resources like corn starch and sugar cane. It will soften or melt in temperatures above 100 F and is not meant for outdoor use.