The current year has not been a kind one for investors in 3-D printing companies. In fact, shares of the two largest players in the field, 3D Systems (NYSE:DDD) and Stratasys (NASDAQ:SSYS), were down 50% and 30%, respectively, by the start of this week.

Does that mean you should go out and buy these stocks? Maybe, but it depends on how you're trying to build your portfolio. Motley Fool contributor Brian Stoffel, for instance, is busy building out a basket of 3-D printing stocks for his portfolio, but won't be buying shares of either of these industry leaders.  

He already owns shares of both 3D Systems and Stratasys, but watch the video below to see why he's looking elsewhere right now, and find out what 3-D printing company he just put his own money behind.

A secret play to benefit from 3-D printing?
By now, you've probably heard a little something about how the world could change because of a single, revolutionary technology: 3-D printing. There are lots of companies going public on the hype of 3-D printing, but not all will be winners.  To see the three companies that are currently positioned to do so, simply download our invaluable free report.

Two of the companies are already mentioned in this piece, but many investors have never heard of the third.  You can find out what it is by clicking here now.

Brian Stoffel owns shares of 3D Systems, Organovo, ExOne, and Stratasys. The Motley Fool recommends 3D Systems, ExOne, and Stratasys. The Motley Fool owns shares of 3D Systems, ExOne, and Stratasys. 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.