Remove the lid of the drum

Drill 24 holes in a circle on the top of the drum

Drill 24 holes, each approximately 20mm in size (similar to the size of your thumbnail), and position them about 40mm below the top of the drum (equivalent to the length of your little finger). You can use a cone drill bit for this task, or you can make the holes with a hammer and a nail.

Make holes in the bottom of the drum

Create four larger holes in the center with approximately 30mm in diameter and around 24 smaller holes with a 10mm diameter. You can use a cone drill bit for this step, or simply make the holes using a hammer and a nail.

Attach handles to the drum with 2 screws per handle

If you do not have proper handles, you can also take chunks of wood.

Create the bottom part of the chimney: Take measurements and mark the metal sheet (70x70cm)

To ensure the chimney has the right size, it should be slightly larger than the 200-liter metal drum, with some overlap. To mark the half circles on the metal sheets, use a string with a length equal to the radius of your drum’s diameter. Secure one end of the string with a nail at the top of the metal sheet and tie another nail to the other end. You can then scratch the metal with this nail to mark the circle. In our example, the outer radius is 35cm and the inner radius is 8,5cm.

Create the bottom part of the chimney: Cut the metal sheet using tin snips

Create the bottom part of the chimney: Make holes in the metal sheet

Make holes in the edge along the long side of the metal sheet. The holes should be 9 cm apart from each other and have to symmetrical. If you later fold the sheet into a cone, the holes must be on top of each other. Use a hammer and a nail to make the holes or drill them.

Create the bottom part of the chimney: Fold a cone and fix it

If you followed the measurements, the cone should be 10 cm high and the diameter should be 16 cm at the top and 65 cm at the bottom. Fix the cone with 3 screws.

Make the upper part of the chimney: Create a view hole and holes for secondary air intake

Use the 52cmx78cm for this. The openings should be round and have a diameter of 30mm. At one point there must be 2 holes opposite, so that you can look through the chimney at this point.

Make the upper part of the chimney: Make 9 holes in the metal sheet

Make holes in the edge along the long sides of the metal sheet. The holes should be 9,3 cm apart from each other and have to symmetrical. If you later fold the sheet into a cylinder, the holes must be on top of each other. Use a hammer and a nail to make the holes or drill them.

Make the upper part of the chimney: form a cylinder of the metal sheet and fix it with 9 screws.

Attach a handle to the upper part of the chimney and one to the lower part offset by 90 degrees

Fix it with 2 screws per handle.

Connect the bottom part and the upper part of the chimney.

Use a welding device for this step. ⚠ Be sure to wear gloves and safety goggles as protective equipment. Welding can make you blind.

If welding is not possible, you can also cut the sheet upwards into many small pins, push it over the top of the chimney and fix it with a pipe clamp.