Op 2-1-2012 10:15, Jay Vaughan schreef: >> Must be able to heat a kettle or pot too, to save even more energy.. >> 'free' energy, huh? >> No brainer. > > I'm going to make one of these in our garden this spring: > > http://www.youtube.com/watch?v=9uh2VExcdbY Sjeez. Looks complicated... -- Gert ------------- gert van santen www.gertvansanten.nl