I don't get the appeal of the idea of 3D home printers. Maybe if I was into, say, plastic Star Wars collectibles and thus could forge rare ones in my spare bedroom. But, I've already got enough plastic crud as it is. What I definitely don't want to do is print my own gun, then hold it up in front of my right eye and pull the trigger. Like everybody tells the kid in Christmas Story, you'll put your eye out.