Version 1.0, August 31, 2001, Copyright, Hugh Jack 1993-2001
· Invented by Charles Hull 1984
· Now developed by 3D systems Inc (90% of market in 1991)
· The physics of the process is based on a photo-sensitive polymer that will harden when exposed to high intensity laser light
· The process uses a vat of photopolymer with an elevator for the part to lower on. The elevator starts at the top of the bath, and drops down a layer at a time as the laser develops each layer.
