An alcohol burner is a simple and effective source of fire that can be made from readily available materials in just a few minutes. It can be useful when camping, fishing, or in an emergency situation when there is no access to standard heat sources. It is important to remember that despite its simple design, the burner requires careful handling of fire and compliance with safety measures.
First, prepare everything you need. You will need two aluminum soda cans, a sharp knife or scissors, sandpaper, a needle or awl, cotton pads (or fiberglass), and a little denatured alcohol or other suitable fuel. Be sure to work in a well-ventilated area, away from flammable objects.
The first step is to prepare the bodies. Cut both cans about 3–4 cm from the bottom. The top part of one of the cans can be used to create a tighter connection if you cut it a little higher. Then sand the edges with sandpaper to remove burrs and sharp edges — this will make the assembly safer.
The next step is to make holes. Take one of the blanks (usually the top part with the rim) and use a needle to make holes in a circle closer to the edge — these will be the nozzles through which the flame will come out. Some people add one hole in the center of the lid for pouring fuel, but you can do without it if you fill the burner before final assembly.
Now assemble the burner. Place a cotton pad in the bottom part — it will act as a wick and distribute the alcohol evenly. Then carefully insert the top part into the bottom part, pressing the edges tightly together. If the connection is tight, you can slightly cut the rim of one of the parts or use a hammer with a cloth to avoid deforming the cans.
Filling and starting. Pour a small amount of alcohol through the central hole (or side slots, if there is no hole). Allow it to soak into the cotton wool. Then carefully light it. At first, the flame may be barely visible, but after warming up, the burner will start to work steadily: alcohol vapors will begin to escape through the side holes and ignite.
This burner can be used to heat food, boil water, or provide warmth. It produces almost no smoke, leaves no soot, and is quite economical. However, never leave it unattended and do not use it in closed rooms without ventilation. When finished, allow the burner to cool before disassembling or moving it.
A homemade alcohol burner is not only a useful skill, but also an example of how you can ensure your comfort in the wild with a minimum of resources.