I made this stove and it worked great! It boiled about 3 cups of water with only about 2 TBSP of HEET. I did not use any insulation on the inside though, I just left it empty when I put the two halves together. I reinforced the seal using shims I cut from the remainder of the can and lodging them between the two halves all the way around. Excellant little stove. I was wondering if HEET was the best fuel or if anyone has had the same or better luck with another kind of alcohol. My concern with HEET are the toxic vapors it creates as you are burning it off. Maybe it's nothing to worry about though. I don't know.