Xem Studiomeasured geometry

Library › Joinery › Lap & halving joints ·

Mitred half lap joint

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

Also called: mitred half lap, mitered half lap, half lap mitre, media madera a inglete, Gehrungsblatt

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

length
60.0 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 half lap that shows a mitre on the front face — the strength of a lap with the look of a mitre.

Mitred half lap joint size chart

dimensionvalue
stock20 × 20 mm square
partspart a, part b
lap10 mm
mitre45° on the show face
assemblesB drops onto A
holdsracking; pin it against lifting

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

mitred-half-lap-joint-part-aMember A: full lower half under the corner, mitred upper halfSTEP · STL
mitred-half-lap-joint-part-bMember B: mitred upper half only at the cornerSTEP · STL
mitred-half-lap-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=mitred-half-lap-joint

Mitred half lap joint, isometric render of a generated part
Render of mitred-half-lap-joint-assembled from the free STEP; not to scale.

Fits with

Half lap joint (corner), isometric render of a generated part
Half lap joint (corner)60.0×60.0×20.0 mm★ 3 files
Splined mitre joint (hidden spline), isometric render of a generated part
Splined mitre joint (hidden spline)80.0×80.0×20.0 mm★ 4 files

Questions

Why a mitred half lap?

The face shows a clean mitre while the lap underneath does the work.