He’s 3D printing a book. “3D printing stole the word ‘printing’ from the written word,” Arad told PopSci from his London studio. “We’re just returning it.” On the internet ...

Get it on Amazon for just $21.95. Space.com: How did you get the idea for the book? Kimberly Arcand: I first started being interested in 3D printing, like, at least a dozen years ago, I'd say.

Now Simon & Schuster is hoping the same sort of buzz can sell books. Wilson, who leads the 3D-printed gun group Defense Distributed, signed a quarter-million dollar deal with Simon & Schuster's ...