I have made 2 of the soda can stoves, the first one worked ok but I was not impressed with the burner function, the flames were too uneven and the boil time was like 7 minutes with the homeade potstand/windscreen made from aluminum flashing . Then I made a 2nd one with an improved burner design. That one worked great, actually too well, when I fired it up for the first time I had the water rolling at 3 1/2 minutes the only problem is the pot stand turned bright red and melted on the kitchen stove. I was able to get the pot off the stand and blow out the stove before I dumped 3 cups of boiling water all over the kitchen. I am in the process of looking for some stainless steel hardware cloth to make a new pot stand from, then it should work great.

You can go to zenstoves.net here web page to get more info than you will ever want on this subject
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