Alright, so you hear the words "Paper 3D Printer," and the last thing you think about printing is a hammer, right? Wrong! The mcor 3D printer which prints with later after layer of paper produced this hammer, and it is strong! Watch the video below:
http://3dprint.com/wp-content/upload.../02/hammer.jpg
http://youtu.be/vtPvcD7L-AY