I agree with Harry on this one. I work in the product development world as an industrial designer. We've been working with 3d printed parts for about 20 years now but in the last 5 or so the technology has rapidly become cheaper, faster and better. But the tech is still just in its infancy. It's where PC computing was in the late 70's. People then thought computers only had uses for business and hobbyists. By the 90's though everybody had one. And now you can do the same things plus more from your phone. As people figure out how to leverage 3d printing technology and make it more accessible, durable and practical, its going to invade every aspect of your life even in ways you cant imagine now.... printing your food, your products, your home, even living tissue. Sound crazy? Check it out. All is being done right now. Within the next two decades 3d printing is going to explode. It's not going to be a manner of whether or not you have a 3d printer in your home. The question is how many styles of 3d printers will you have and what can't be printed?