Just think about it. We can use a printer to make a printer. Then someone else can come along and make more printers of the one that was made of the original.
Imagine that. In a few years the world would be populated with a bunch of retarded 3D printers like the guy who was cloned in the movie Duplicity", off another clone. The result of which was the copy of the copy wasn't as good. He was a little retarded.