Suitsuki-sashi-shikuchi

Suitsuki-sashi-shikuchi wooden joinery technique:

- Sui means "water" and tsuki means "to insert", together meaning a thin inserted piece like a spline.

- Sashi refers to interlocking or fitting pieces together.

- Shikuchi means an angled or intersecting joint.

To form this joint:

- The ends of two wooden pieces meeting at an angle are prepared, such as mitered.

- A thin, wedge-shaped spline is cut to fit precisely at the mitered joint line.

- The spline is sculpted with interlocking "teeth" or tabs along its length following the wood grain.

- It is carefully inserted like water flowing into the joint line, with teeth engaging both pieces.

This traditional Japanese technique uses a toothed water-like spline to reinforce the strength of angled joins.

Even without glue, the interlocking spline securely binds the mitered wood pieces at the shikuchi intersection through mastery of grain-matched contacts.

The suitsuki-sashi-shikuchi demonstrated refined Japanese woodworking craftsmanship through delicate yet robust spline reinforcement of compound angle joints.