aluminum can stove

instead of buying an 80 dollar backpacking stove that burns gas and that weighs a lot, a lightweight alcohol (denatured) stove can be built using 2 aluminum soda cans. building it takes only ~15 minutes assuming that the builder knows how to. this stove brings 8 oz of water to a boil in 4 or 5 minutes using 1.5 tablespoons of fuel.