Kama tsugi (Japanese gooseneck splice) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/kama-tsugi-gooseneck-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 130.0, width 20.0, height 20.0
- 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 splice with a narrow neck and a wedge-sided head (the gooseneck): the head's taper draws the members tight as it drops in.

dimension  value
stock  20 × 20 mm square
parts  male, female
neck  6 mm wide, 10 mm long
head  14 mm wide tapering to 10 mm, 15 mm long
assembles  drops in from above
holds  pulling apart lengthwise, more strongly than the dovetail

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, 3 parts): https://xemstudio.com/files/hardware/kama-tsugi-gooseneck-splice/index.json
API: https://xemstudio.com/api/geometry?object=kama-tsugi-gooseneck-splice