NEW YORK -- You've probably heard of 3D printed face masks and even 3D printed hands, as 3D printing technology has expanded over the past few decades. Now a company says it has listed the first 3D printed house in the United States for sale. The Riverhead, New York, home is listed online through Zillow with an asking price of $299,999. "This is the future, there is no doubt about it," says Kirk Andersen, the director of operations at SQ4D Inc. SQ4D uses automated building methods, or 3D printing, to build structures and homes. "What we want to do is print homes fast, and cheap and strong," A...