Dry Sauna: Wood Choice Determines Seating

Dry sauna: wood choice determines whether you can sit.
Interior of a small residential dry sauna. The interior is entirely made of light-colored softwood—spruce, aspen, or Western Red Cedar, as these have low thermal conductivity and are not hot to the touch at high temperatures; hardwood and metal must absolutely not be used, as they would cause burns. The wooden boards are laid horizontally, with an air gap behind them. Seating is on two tiered levels, the upper level being hotter and the lower level cooler, allowing selection based on tolerance. In the corner is the heater, piled with dark gray igneous rocks, with a wooden bucket and long-handled ladle nearby. All fasteners are wooden pegs or screws hidden behind the wood, with no metal visible on the surface. Lighting is extremely dim, hidden behind the lower seating. Avoid: using hardwood and exposed metal parts, installing light fixtures on the ceiling that shine directly into the eyes, using painted materials inside, making the space too large.

Translated from Chinese by AI.

一間住宅的小型乾式烤箱。內部全部是淺色的軟木——雲杉、白楊或西部紅檜,這幾種的導熱率低,高溫時手摸上去不燙;絕對不能用硬木與金屬,坐上去會燙傷。木板水平鋪設,背面留空氣層。座位分兩層階梯,上層溫度高、下層較低,可以依耐受度選。角落是加熱爐,上面堆著深灰的火成岩,旁邊有一個木桶與長柄杓。所有的固定件都是木釘或藏在木材背面的螺絲,表面看不到任何金屬。照明極弱,藏在下層座椅的背後。避免:使用硬木與外露的金屬件、把燈具裝在天花直照眼睛、在內部使用上漆的材料、把空間做得過大。