Over the last couple of years, awareness about 3-D printing has absolutely exploded. It has gone from a relatively sleepy industrial prototyping process to one that offers the potential to completely revolutionize how the world makes just about everything. While the merits of this manufacturing potential can certainly be debated, the stocks that are focused in the space – for the most part – have absolutely exploded in the past year. 

DDD Chart

DDD data by YCharts

As a beginning 3-D printing investor, it can be intimidating to get a sense of where the industry is heading, and to find the right ways to invest in the space. In the following presentation, 3-D printing analyst Steve Heller helps investors get an understanding of the technology and its growth prospects, and highlights five stocks to watch: 3D Systems (NYSE:DDD), Stratasys (NASDAQ:SSYS), ExOne (NASDAQ:XONE), voxeljet (NYSE:VJET), and Arcam (OTC:AMAVF).