3Dモデル: Shihou-ari-tsugi by thejoinery on Sketchfab
組み立ての要点
Favored by cabinetmakers, Ari Otoshi delivers a near-invisible seam while resisting pull-out forces. Its tapered geometry is a testament to precise layout work. The dovetail tightens under load because the pin cannot withdraw once seated—a principle shared with Western dovetails but executed with Japanese proportional guidelines and minimal reliance on glue.
歴史的背景
Ari Otoshi is one of the most recognizable members of the Ari Gumi dovetail family. The name means "dovetail drop" or "falling dovetail," referring to how the pin drops into the tail and locks. Cabinetmakers have used it for centuries in tansu, chests, and architectural trim where corners must resist racking without metal fasteners. It remains a standard test of layout accuracy in woodworking schools.
組み立て手順
- Lay out the dovetail angle on both pieces; neck width is typically one-third to one-quarter of the piece width.
- Cut the tail (female) first, sawing to the line and cleaning with chisels.
- Transfer the tail shape to the pin piece and mark the mating cut.
- Saw and chisel the pin; aim for a snug fit that requires light tapping to seat.
- Assemble dry; the joint should tighten under load without adhesive.
日本で見られる場所
- Traditional tansu and cabinetry — Kyoto workshops and antiques galleries
- Temple and shrine fittings — Throughout Japan — architectural trim and storage
バリエーション
Through dovetails expose end grain on both faces; half-blind versions (Kakushi Ari) hide the joint from one side. Multiple tails can be used on wider boards. Sliding dovetails connect shelves to case sides with a tapered pin that locks over time.
用途
- Fine cabinetry
- Storage chests
- Architectural trim
必要な道具
- Dozuki saw
- Nomi chisels
- Marking knife