Woodworker Dylan Iwakuni demonstrated the wonderful traditional art of Japanese wood joinery with several different examples. This particular technique of joining pieces of wood without any adhesives or nails was brought to Japan from China in the late 12th century and has been used for all sorts of projects of varying sizes. It also offers excellent strength and stability due to the exact fit of the joints.
At the end of the 12th century, fine woodworking skills and knowledge were brought into Japan from China. Over time, these joinery skills were refined and passed down, resulting in the fine wood joineries Japan is known for.
via Open Culture