This is Sashimono, an ancient Japanese woodworking art where every piece of wood fits together perfectly, like a puzzle. Craftsmen use precise measurements and traditional tools to create joints so strong, they hold without any nails, screws, or glue, creating structures that are both strong and beautiful.
This technique takes years, sometimes decades, to master.
But what's crazy is it actually strengthens the structure over time, because as the wood naturally expands and contracts, the joints tighten even more, meaning these pieces can last for ages, which is why this skill is passed down through generations, preserving a craft that values precision and patience.