Leonardo da Vinci's Charring Technique Predates Japanese Yakisugi Method

Yakisugi is a traditional Japanese method of charring wood that has gained prominence in modern bioarchitecture for its durability benefits. By forming a carbonized protective layer, Yakisugi helps shield wood from water, insects, fungi, and even fire, significantly extending its lifespan. Although the technique was formally documented in the 17th and 18th centuries, new research suggests that Leonardo da Vinci may have described the protective benefits of charring wood more than a century earlier, according to findings published in the Zenodo research archive.

📜 Unlocking Leonardo’s Notebooks#

Leonardo da Vinci left behind an extraordinary legacy of innovation through more than 13,000 pages of notes, later compiled into multiple codices. Sadly, less than a third of these writings survive today. His notebooks reveal visionary ideas that anticipated future technologies, including:

• Concepts for flying machines
• Early bicycle designs
• Cranes and engineering mechanisms
• Missiles and machine guns
• A double-hulled “unsinkable” ship
• Devices to walk on water

Perhaps even more astonishing, in his Codex Atlanticus (1490), Leonardo imagined a telescope-like device, writing about “making glasses to see the moon enlarged” — nearly a century before telescopes were actually invented.

🧪 Leonardo and Early Synthetic Plastic?#

In 2003, Alessandro Vezzosi, director of the Museo Ideale in Italy, discovered several intriguing mixture formulas within Leonardo’s notes. After recreating these recipes, he produced a hardened material remarkably similar to Bakelite, an early synthetic plastic that became widely used in the early 20th century. This surprising discovery has sparked speculation that Leonardo da Vinci may have pioneered the earliest form of man-made plastic centuries before its recognized invention.

Leonardo’s writings continue to prove that he was far ahead of his time — not only imagining future machines, but perhaps also influencing materials science and architectural innovation long before the modern world caught up.