Staples (NASDAQ:SPLS) has partnered with 3D Systems (NYSE:DDD) to sell its Cube line of consumer 3-D printers online and in select stores. Shares reacted positively on the news, but contributor Steve Heller doesn't believe it changes anything about the long-term prospects of a consumer-driven, 3-D printing revolution. Check out the video below to hear his thoughts on the subject and why he owns 3-D Systems over competitors.