Teacher Liz Arum gives a demo of Tinkercad, a new browser-based 3D modeling environment. We then talk to her about some of the basics of 3D modeling. This is an archived clip from Make: Live, which was originally broadcasted on 9/28/11. Go to http://makezine.com/​live/​ for information about the show, chat transcripts, and details on the next show.