The 3-D printing space has a lot of investors very excited about its wide range of possibilities as we begin to understand the applications of this technology better. ExOne (XONE) is the newest player in this space to go public. The company has a very different large-scale industrial manufacturing focus for its printers than the other two public competitors in the space. It is becoming a compelling growth story, but is it a buy at these prices? In this video, Motley Fool industrials analyst Blake Bos takes a look at ExOne's orders for 2013 versus its production capacity, discusses leadership at the company, and takes a look at its projected growth and guidance, to help investors tell if ExOne is overvalued or undervalued today.