Kanawa tsugi (keyed hooked splice) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/kanawa-tsugi-splice/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)
Basis: Xem Studio design — geometry computed in the generator from traditional proportions
Catalog version: 2026-10-20

Overall (mm): length 220.0, width 20.0, height 32.0
- Woodworking joint drawn for 3D printing: the parts lock together by shape, so a print can be joined without glue or screws. Drawn at true size with the parts line to line (zero gap) in their assembled position — add your printer's fit allowance to the mating faces (your AI or slicer can do this).
- A hooked scarf locked by a square key driven through its middle, so it holds in every direction — used for posts and beams.

dimension  value
stock  20 × 20 mm square
parts  part a, part b, key
scarf  100 mm with two 4 mm hooks
key  6 × 6 mm through the centre of the scarf
assembles  slide together sideways, drive the key through
holds  pulling apart lengthwise, bending, and sliding sideways (the key)

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Xem Studio: Joinery design (geometry computed in the generator from traditional proportions) — web — Xem Studio design — https://xemstudio.com/

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 4 parts): https://xemstudio.com/files/hardware/kanawa-tsugi-splice/index.json
API: https://xemstudio.com/api/geometry?object=kanawa-tsugi-splice