Kanawa Tsugi
A scarf joint reinforced with a metal collar to resist bending and seismic stress. Revered in temple restoration.
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Joint profile
Kone Tsugi 腰根継ぎ
A basic scarf joint for lengthening timbers, featuring interlocking shoulders that prevent separation.
Assembly insights
Kone Tsugi teaches the fundamentals of lengthening joints. The interlocking shoulders provide mechanical strength while the angled cut increases gluing surface area. This joint bridges the gap between simple edge joints and complex temple-grade tsugite techniques.
Applications
- Beam extensions
- Long spans
- Repair work