Stratasys (NASDAQ:SSYS) has had an incredible year: The stock has rallied 60% year to date, the company has successfully digested its merger with Objet, and it also bought MakerBot, the leading consumer-oriented 3-D printing company.

It's expected that Stratasys will close out 2013 with a strong finish and bring home somewhere between $470 million and $490 million in revenue for the entire year. Although the midpoint of $480 million translates to a 123% increase in revenue growth, this figure should be taken with a grain of salt because it includes Objet's operating results. Instead, if investors want to get a better read on Stratasys' growth rate, they should turn to its organic growth rate, which normalizes any acquisitions. Last quarter, Stratasys' organic growth rate stood at 26%, slightly below the industry growth rate of 28.6% in 2012.

In the year ahead, investors should watch to see whether Stratasys makes an entrance into the metal 3-D printing space, an opportunity that could prove to be quite massive. In the following video, 3-D printing analyst Steve Heller reflects on Stratasys' 2013 and looks forward to the year ahead.

Fool contributor Steve Heller has no position in any stocks mentioned. The Motley Fool recommends and owns shares of Stratasys. Try any of our Foolish newsletter services free for 30 days. We Fools don't 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.