In this 3-D printing themed video installment, 3-D printing analyst Steve Heller sits down with the head of Motley Fool's industrial sector, Blake Bos, to talk the latest buzz in 3-D printing.

Topics covered include:

  • The ridiculous comments made by 3D Systems' (NYSE:DDD) CEO Avi Reichental
  • Why there's a huge opportunity in metal 3-D printing right now, and which companies are in position to benefit
  • How to approach 3-D printing valuations today
  • What ever-bearish Citron Research got wrong about 3D Systems
  • The real reason why Stratasys (NASDAQ:SSYS) partnered with Dell
  • Why Google's (NASDAQ:GOOGL) Project Ara could be taken to the next level
  • Why you should avoid this newly launched 3-D printing mutual fund

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.