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Tongue and groove joint

Name: Tongue and groove joint dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

What are the proportions of a tongue and groove joint? · Hardware · basis: Xem Studio design — geometry computed in the generator from traditional proportions

Also called: tongue and groove, tongue and groove dimensions, t&g joint, machihembrado, junta machihembrada, Nut und Feder

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

length: 120.0 mm
width: 80.0 mm
height: 10.0 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).
Edge-joins boards (panels, floors, enclosures) so the faces stay flush.

Tongue and groove joint size chart

dimension	value
stock	10 mm boards, 60 mm wide
parts	tongue board, groove board
tongue	3.33 mm thick (middle third), 5 mm long
assembles	edge to edge; slides in from the end or presses in
holds	the boards flush with each other; glue or a frame against pulling apart

Where the files are

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

Xem Studio

Joinery design (geometry computed in the generator from traditional proportions)

web

Xem 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

tongue-and-groove-joint-tongue-board	Board with the tongue	STEP · STL
tongue-and-groove-joint-groove-board	Board with the groove	STEP · STL
tongue-and-groove-joint-assembled	All 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=tongue-and-groove-joint