In the following video, Motley Fool industrials analyst Blake Bos takes a question from a Motley Fool reader on Facebook, who asks: "I have researched 3D additive printing and have a small amount of money to invest as part of my 'more aggressive-more speculative' investment strategy. I already have a small position in Dassault Systems because I believe they have a good handle on the software, but I would like to invest in a hardware and services provider. I have looked at Stratasys (NASDAQ:SSYS), 3D Systems (NYSE:DDD) and ExOne (NASDAQ:XONE), but all seem to be about the same as playing red or black on the roulette wheel. Now that I know a little bit about 3D printing and believe it has the potential to be a major 'game-changer,' how do I get on board?"

Blake Bos has no position in any stocks mentioned. The Motley Fool recommends 3D Systems, Stratasys, and The ExOne Company. The Motley Fool owns shares of 3D Systems and Stratasys and has the following options: Short Jan 2014 $36 Calls on 3D Systems and Short Jan 2014 $20 Puts on 3D Systems. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.