Most people I know have never even seen a 3D printer and ask me "what is 3D printing? How does it work?" and similar basic questions - so I thought I'd share what I usually tell my friends as I give them a demo of my printers in action.
Remember - this is for newbies - so if you've already been 3D printing, this post might be too basic for you. I'm just trying to keep it all super simple, sticking to the basics for people who know nothing yet, so I'm leaving out lots of gory, boring details.
Via John Evans