In the past, construction and metal processing was very costly for carpenters in Japan. So, instead of using nails, carpenters called “miyadaiku” developed unique methods for interlocking pieces of wood together, like a giant three-dimensional puzzle. The Takahiro Matsumoto is a carpenter miyadaiku for over 40 years. The company operates in Kamakura, Japan, which assesses and repairs the damage suffered by many ancient temples in the city of. Using ancient techniques, ensures that these structures will remain stable for the next generations.