Xem Studiomeasured geometry

Library › Joinery › Japanese joinery ·

Kama tsugi (Japanese gooseneck splice)

What is a kama tsugi joint? · Hardware · basis: Xem Studio design — geometry computed in the generator from traditional proportions

Also called: kama tsugi, 鎌継ぎ, gooseneck joint, japanese gooseneck splice, gooseneck splice joint, empalme cuello de ganso, Hakenkamm japanisch

Exact dimensions. True size, with no printing tolerance added.

length
130.0 mm
width
20.0 mm
height
20.0 mm

Notes

  • 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.

Kama tsugi size chart

dimensionvalue
stock20 × 20 mm square
partsmale, female
neck6 mm wide, 10 mm long
head14 mm wide tapering to 10 mm, 15 mm long
assemblesdrops in from above
holdspulling apart lengthwise, more strongly than the dovetail

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Xem StudioJoinery design (geometry computed in the generator from traditional proportions)webXem Studio design

Free files

★ Free files 3 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json

kama-tsugi-gooseneck-splice-maleMale member with the gooseneck tenonSTEP · STL
kama-tsugi-gooseneck-splice-femaleFemale member with the gooseneck socketSTEP · STL
kama-tsugi-gooseneck-splice-assembledAll parts in their assembled position (each part its own solid)STEP · STL
Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.
Set it up →

Plain text: sheet.txt · JSON: /api/geometry?object=kama-tsugi-gooseneck-splice

Kama tsugi (Japanese gooseneck splice), isometric render of a generated part
Render of kama-tsugi-gooseneck-splice-assembled from the free STEP; not to scale.

Fits with

Koshikake kama tsugi (lapped gooseneck splice), isometric render of a generated part
Koshikake kama tsugi (lapped gooseneck splice)130.0×20.0×20.0 mm★ 3 files
Ari tsugi (Japanese dovetail splice), isometric render of a generated part
Ari tsugi (Japanese dovetail splice)130.0×20.0×20.0 mm★ 3 files

Questions

What does kama mean?

Kama (鎌) is a sickle; the head's shape gives the joint its name.