When investors talk about 3-D printing being the next "trillion-dollar revolution" they're referring to the addressable manufacturing market that 3-D printing has the potential to replace. In a recent interview, the CEO of Materialise, who was recently voted the most influential person within the 3-D printing industry, believes that 3-D printing has the potential to represent up to 30% of the worldwide manufacturing industry. In 2010 terms, this would make 3-D printing a $3 trillion worldwide industry. With the 3-D printing industry only worth a few billion dollars today, not only does this proclamation seem farfetched, it seems downright impossible. In this video, Motley Fool contributor Steve Heller discusses whether this is even possible, what sort of time frame is under consideration, and offers his favorite 3-D printing investment today.

Fool contributor Steve Heller owns shares of 3D Systems. The Motley Fool recommends 3D Systems and Stratasys. 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.