While we're on the topic of giant stereolithography printers, we've just been tipped onto a video of another. This one is the iPro 9000 XL, evidently the largest commmercially available SL system. Amazingly, the build chamber is a 59 inch long vat full of liquid manufacturing media.
Somehow we just don't find SL videos as visually interesting as other 3D deposition techniques. That's because all you see during the printing process is the laser dancing over the liquid media vat, while the printed object is developed out of view under the liquid surface. However, there is a dramatic moment when the object rises magically out of the fluid, as if it is being created at that instant.
Via 3D Systems