It's cool technology, but I don't like the fact that it is a 2 step process. Liek mkapras said, it is both additive and subtractive. The positive is that it can use paper that has been writen or printed on, since it only colors the outside edges. This means you can recycle your paper into 3D prints. Truly an innovation in itself. For the price though, I can't see them selling too many of these honestly.