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Open Flame Stoves tend to be very simple in design allowing for a fail proof trail system that can be easily replaced while thruhiking. Even if you choose not to use one of these designs, it's good to know how easy it is to make one should the need arise on the trail or during an emergency survival situation.
Note - These are just some of the many DIY alcohol stove options. For more information on different options visit Zen and the Art of the Alcohol Stove and the Templates page.
Simple Open Flame Stove
Empty 7oz Cat Food Can
Open a can, such as a 7oz aluminum cat food can, empty and wash out with soap and water. Your done.
Small stove used in luxurious restaurant in Taipei
Simple open flame stoves are used in Asia to make simple and delicious dishes at home and in restaurants.
Top 30mm of unopened aluminum 12oz drink can
Anything from tealight cups, to metal caps, to cut down drink cans, to shaped foil, to tuna cans, to tin cans may be used.
Open Flame Stoves with a Wick
Altoids Sours Tin
Find a metal can the size you want or cut down a larger can to size. Add fiberglass insulation or perlite (volcanic rock used in insulation and horticulture) as a wick. This wick may increase vaporization, pulls fuel up to where it can be lit and holds the fuel in the stove when moved, like a sponge. If you are using perlite, you may want to just use the large pieces in order to decrease the amount of small pieces and powder that will leak out into your pack. An metal screen (aluminum, brass, etc) is required to hold perlite in your stove.
HogOnIce Tealight/Heineken Pot Stystem
One of the most innovative ultra lightweight open flame stove systems is the HogOnIce's Homemade Cooking System. It uses a fiberglass insulation filled tealight cup for a stove, a rolled up section of hardware cloth for the stand and an empty Heineken can for a pot. If you use a "safety can opener" that opens cans from the side as opposed to the traditional top opening can openers to remove the top of the Heineken can, you bend up the pull tab on the top and make a tight fitting lid for your Can-Pot.
7oz Cat Food Can
If you wrap the fiberglass insulation around the inside walls of your stove (or anything else you can come up with), you may be able to increase the amount of surface area of fuel contacting oxygen and increase the rate of fuel consumption and possibly the efficiency.
NOTE -
Fiberglass insulation does burn a bit and releases an odor when heated. I don't know if breathing any of the fumes released during stove operation is hazardous to your health.
Do not use closed cell foam (i.e. upholstery padding) for a wick. Closed cell foam releases poisonous ammonia gas when burned.
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