The 3-D printing industry had a big showing at the recent Unmanned Systems 2013 conference in Washington, D.C. Stratasys (SSYS 1.74%), for instance, was showing off its fuse-deposition modeling (FDM) technology that can print off parts for drones.

Motley Fool analysts Blake Bos and Rex Moore were there, and in this video they chat with Stratasys' John Dobstetter about the software involved in 3-D printing.