In this video, Motley Fool industrials analyst Blake Bos introduces a company that may catch 3-D printing investors' eyes. iRobot (IRBT) recently filed a patent for what it calls a Robotic Fabricator, which would move and rotate a 3-D product while it was being printed, which creates a number of efficiencies in the printing process. Blake tells investors why this could change the 3-D printing industry, what the company would need to do to make this a reality, and what investors should watch with iRobot going forward.