By this point, every serious technology investor is already familiar with the concept of 3-D printing -- but have you ever heard of a machine that lets you take a bite out of your own face? 

From traditional applications offered by companies like Stratasys (NASDAQ:SSYS) and ExOne (NASDAQ:XONE) to experimental printers that can produce a chocolate bar in your likeness, this month's South by Southwest Interactive technology conference was thick with 3-D buzz. 

Check in with Foolish analysts Rex Moore and Lyons George as they discuss the state of this groundbreaking technology -- and the ways investors can get in on it right now -- from the floor of the show in Austin.