Iron core has been used since ancient times in the sauna oven. We used iron balls in wartime. The thermal capacity of cast iron is more than 20% higher than that of stone and the thermal conductivity 30 times higher. That’s why iron balls heat the stove and sauna faster.
The iron balls do not crack and do not collapse.
Why don't we recommend using only iron balls to fill the oven? Cast iron gives too dry and hot steam. To balance the humidity and obtain the soft, pleasant and even healing vapor, please mix balls and stones.
Manual:
Place the balls at the bottom of the oven. Then you can put on the balls special natural stones for baths and saunas (porphyria, dunite, chromite, quartzite, etc.) with the rest of the balls. The recommended proportion of porcelain and stone is 30:70 in favor of natural stone.
diameter - 6 cm
Diameter - 6cm
