Rocket Stove

I'd like to find a tin big enough to make my own rocket stove.
They require very little fuel and produce a lot of heat with very little smoke. Win win win.
http://www.treehugger.com/corporate-responsibility/rocket-stoves-build-your-own-ultra-efficient-cook-stove-video.html

This pdf shows how to make a rocket stove, a parabolic reflector stove and a few other kinds of low fuel cooking solutions:
http://rocketstoves.org/capturing_heat/pdf/capturing_heat.pdf