What is Stereo Lithography? Is a prototype manufacturing process
for using an Ultra-Violet Laser, a vat of photo-curable liquid
resin, and a controlling system, A platform is lowered into the
resin (via an elevator system), such that the surface of the
platform is a layer-thickness below the surface of the resin. The
laser beam then traces the boundaries and fills in a
two-dimensional cross section of the model, solidifying the resin
wherever it touches. Once a layer is complete, the platform
descends a layer thickness, resin flows over the first layer, and
the next layer is built. This process continues until the model is
complete. Once the model is complete, the platform rises out of the
vat and the excess resin is drained. The model is then removed from
the platform, washed of excess resin, and then placed in a UV oven
for a final curing. The model is then finished by smoothing the
"stair-steps."
