http://feeds.boingboing.net/~r/boingboing/tv/~5/CjDGFiLC3-o/popsci-carve-steel-with-saltwater-electricity-and-a-tin-earring.mp4 BB Video: Carve Steel with Saltwater, Electricity and a Tin Earring (Popsci) http://www.boingboing.net/2009/08/06/bb-video-carve-steel.html 2009-08-06 http://boingboing.net/mtimages/bbvideo.png