The most important thing for the stove in the sauna – a good heat transfer, so all the metal is selected konstruktsiyu. Iznachalno we cooked a rectangular stove made of steel sheet thickness of 6 mm. Water tank located at the side, and the stove top. But after we protopit it 3-4 times, it is deformed. I had to cancel it and go to their next version of a new furnace obdumanno. Dlya chose a cylindrical shape, based on pipe diameter of 600 mm (suitable and tube diameter 450-500 mm). The thickness of the tube 8-10 mm. The furnace has been operating for 28 years – is not subject to follow! It consists of 3 demountable units: Fire tube furnace, water tank, puts on top, grate bars reshetka. Kolosnikovuyu (2 semi-circle) of the welded rebar diameter of 25 mm and placed grates on the beam (the same twist of reinforcing steel). Hot water tank welded from sheet steel 3 mm thick. In the lower part of the welded pipe to 15-25 mm valve (not shown). On top of the tank – the cover as a sector, which is fastened to the 2-sharnirah. Truba square (140 x 140mm) – stainless sheet with a thickness of 5 mm. It ends in a cylindrical pipe. Fire-box laid washed Rechnik (gravel). In order to avoid rapid cooling flue lattice “throwing” water heater, the bottom of the tabs (the space between the fire tubes) filled with sand (you can fine Rechnik). On opening the furnace and the steam hung door sheet metal thickness of 3 mm. “Scores” on the rocks just hot vodu. Pech set on a brick foundation. You can lay the foundation stone, the Gulf of cement mortar. Around the stove on the floor can be laid ceramic.