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Tee halving joint (T-lap)

Name: Tee halving joint (T-lap) dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

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

Also called: tee halving joint, t lap joint, tee lap joint, t halving, junta en T a media madera, T-Überblattung

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

length: 80.0 mm
width: 60.0 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 T-shaped frame joint: the end of one member laps into a half-depth notch in the other.
For a tension-proof T, use the dovetail halving joint instead.

Tee halving joint size chart

dimension	value
stock	20 × 20 mm square
parts	cross member, end member
notch	20 wide × 10 mm deep
end lap	20 long × 10 mm
assembles	the end member drops into the notch from above
holds	racking; the end member can lift unless pinned

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

tee-halving-joint-cross-member	Through member: notch in the top half	STEP · STL
tee-halving-joint-end-member	End member: bottom half removed at its end	STEP · STL
tee-halving-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=tee-halving-joint