Wood in 0: Hafted tools

This atlas treats Wood as a system: mill route, coatings, tests and the cavity it sits in. Conductivity note: ~0.1–0.2 W/m·K along vs across grain. Insulation score 56/100 is relative to 32 entries — metals lose, VIPs and aerogels win. Fire letter in editorial use: D–B depending on product / treatment. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.

Origin: Palaeolithic tools; CLT 1990s Austria, Global forests / Graz. The process chapter follows feedstock → conversion → forming → finish → install. Uses span buildings to defence / safety. Pairings matter: steel. Circularity mark 76/100. Ask which scrap, which certificate, which year.

Related atlas entries, a short glossary, and three threads that keep Wood honest. The cavity insulation timber walls need. EN 13501-1 reaction-to-fire letter (A1–F), not a wall rating. Thermal conductivity in W/m·K. Lower means better bulk insulation. Declared performance after blowing-agent or moisture drift.