I purchased one of these from Z Corp about 4 years ago for the last company I was at. Very cool tech but in the end we did not use it much. Importing files from Solid Works and waiting an eternity for them to print just did not make sense. It looks like the media has changes from the video though. In the one we had, the powder was a real fine ??? somethingorother bound by the ink from the print cartridge (just normal ink I believe) and had no strength when you took it out of the tray. We broke lots of stuff just trying to get it out and cleaned up. Once out it had to be "fixed" with what was basicly SuperGlue in a big bottle. This made those cool movable models they show a real PITA to make as everything stuck together. Even fixed, we could never have used a printed wrench to tighten a nut even a small amount without it breaking.
It must have gotten a great deal better over the last 4 years, Right????