Kane Tsugi

The Kane Tsugi is a type of wood joinery used in Japanese carpentry. In English, it is known as a half-lapped miter joint.

To form the joint, two pieces of wood are miter cut so their angled ends meet at a corner. Then a short tapering cut is made along the wood grain on one end, creating a half-lap that overlaps the other piece.

The unique feature of this joint is that the lapping portion follows the wood grain direction of just one of the pieces. This allows the cut wood fibers to interlock securely.

Kane Tsugi joints are very strong despite being mounted without nails or glue. The overlapping half-lap engages the wood grain to transfer loads effectively.

Some common applications of this traditional Japanese wood joint include timber framing, where robust corner connections are needed. It is also suitable for joinery in furnishings and woodworking projects requiring disassemblable but durable angled connections between structural members.

By following the grain direction of one piece for interlocking strength, the Kane Tsugi or half-lapped miter joint both joins two components at an angle and respects the natural properties of the wood material. This makes it a versatile and enduring joinery technique.