Experiencing Traditional Japanese Architectural Techniques (5): “Wa-Kugi” (Japanese Nails)
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? Wa-Kugi are traditional Japanese nails that have been used since the Asuka period. Their most distinctive feature is their thick, angular shaft, which increases the surface area in contact with the wood, thereby enhancing the fixing strength and supporting the durability of buildings over long periods. Each Wa-Kugi is handcrafted by artisans, making every nail slightly different in thickness, which contributes to the delicacy of Japanese architecture. 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.