Hana Sen Study Model

Hana Sen, 鼻栓

Also known as the external draw pin joint is a modified version of the mortise and tenon. The tenon extends through and past the mortise, enabling the usage of pins or wedges, which can not only tighten, but entirely lock the joint together.

The pin being past the hole of the mortise allows the pin to not face the direct forces of the component’s use, making unintentional disassembly of the joint very unlikely, while maintaining the ability to be disassembled in general.