Xem Studiomeasured geometry

Library › Joinery › Dowel & loose tenon joints ·

Loose tenon joint (floating tenon)

What size is a loose tenon? · Hardware · basis: Xem Studio design — geometry computed in the generator from traditional proportions

Also called: loose tenon, floating tenon, domino joint, domino tenon size, espiga suelta, lose Feder, Dominodübel

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

length
80.0 mm
width
80.0 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).
  • Both parts get a mortise and a separate tenon joins them — the printable version of a Domino joint.

Loose tenon joint size chart

dimensionvalue
stock20 × 20 mm square
partsstile, rail, tenon
tenon15 × 6 × 24 mm (12 mm into each part)
assemblestenon into both mortises, then close up
holdsracking; pin or glue against pull-out

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

loose-tenon-joint-stileMember with a 12 mm deep mortiseSTEP · STL
loose-tenon-joint-railButting member with a matching mortiseSTEP · STL
loose-tenon-joint-tenonFloating tenon 15 × 6 × 24 mmSTEP · STL
loose-tenon-joint-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=loose-tenon-joint

Loose tenon joint (floating tenon), isometric render of a generated part
Render of loose-tenon-joint-assembled from the free STEP; not to scale.

Fits with

Dowel joint (butt joint with two dowels), isometric render of a generated part
Dowel joint (butt joint with two dowels)80.0×80.0×20.0 mm★ 5 files
Blind mortise and tenon joint, isometric render of a generated part
Blind mortise and tenon joint80.0×80.0×20.0 mm★ 3 files

Questions

Why a loose tenon for prints?

Both parts stay simple straight pieces; the tenon prints flat and strong.