Experiencing Traditional Japanese Architectural Techniques (5): “Wa-Kugi” (Japanese Nails)
At the Kigumi Museum, visitors can experience more than just timber framing; most of these techniques are registered as UNESCO Intangible Cultural Heritage under “Traditional skills, techniques, and knowledge for the conservation and transmission of wooden architecture in Japan.” In this blog, I will explain the traditional Japanese architectural techniques displayed at the Timber Framing Museum in sequence.
What is Wa-Kugi?
Main Differences Between Wa-Kugi and Western Nails
Appearance: Wa-Kugi have a variety of head shapes but most have angular shafts. In contrast, Western nails, which were introduced to Japan from Europe during the Meiji era, typically have flat heads and round shafts.
Manufacturing Method: Wa-Kugi are handcrafted one by one by craftsmen, which makes them more expensive than mass-produced Western nails. However, this also means that the quality and characteristics of the nails are superior.
Rust Resistance and Durability: Western nails tend to rust over time, which can penetrate into the wood. However, Wa-Kugi are made through a forging process that produces an oxidized film, making them less prone to rust and maintaining their performance over a long period. Additionally, Wa-Kugi have the property of bending naturally around knots in the wood, due to being made of soft iron.
Let’s Learn Traditional Japanese Architectural Techniques
Join us at the Kigumi Museum to explore the traditional Japanese architectural techniques firsthand.