Our design is based on a study that we have found in the web. This study claims that most efficient way for the cans to be prepared for the heaters is: cut top and create 4 holes each 10 mm wide in diameter.
So we did :)
Heater consists of 72 cans combined into 8 pipes. Heater is made of all reused materials (except of nails, screws and paint):
- front is made of old window
- back is made of old door frame and cardboard
- pc fan, switch, pipe and small wood pieces where found somewhere, you know how it is done in village houses :)