Yeah, I was wondering the exact same thing about copyright. Given the current state of copyright law, it seems like it might be of dubious legality to take a carefully engineered and manufactured part and duplicate it at the press of a button. In much the same way as the advent of digital distribution of music (and video, books, etc.) made the music industry crack down on file sharing, are we going to see producers of engineered products attempt to shut down technology such as this when it becomes more widely available and cheap?