Library › Joinery › Bridle joints ·
Corner bridle joint (open mortise and tenon)
What are the proportions of a corner bridle joint? · Hardware · basis: Xem Studio design — geometry computed in the generator from traditional proportions
Also called: corner bridle joint, bridle joint, open mortise and tenon, slip joint, bridle joint dimensions, junta de horquilla, ensamble de horquilla, Schlitz und Zapfen, Scherzapfen
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).
- The stock is split in thirds: the tenon is the middle third, the slot leaves two cheeks of one third each.
- Prints well: both parts flat, slot and tenon in the plane of the bed.
Corner bridle joint size chart
| dimension | value |
|---|---|
| stock | 20 × 20 mm square |
| parts | slotted member, tenon member |
| tenon / slot | 6.67 mm (one third of 20) |
| length | 20 mm (one stock width) |
| assembles | the tenon slides into the slot from the side |
| holds | racking, with large glue-free bearing faces; pin it against sliding out |
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
| corner-bridle-joint-slotted-member | Member with the open slot (two cheeks) | STEP · STL |
| corner-bridle-joint-tenon-member | Member with the open tenon | STEP · STL |
| corner-bridle-joint-assembled | All parts in their assembled position (each part its own solid) | STEP · STL |
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.Plain text: sheet.txt · JSON: /api/geometry?object=corner-bridle-joint

Fits with
Questions
How thick is the tenon in a bridle joint?
One third of the stock: 6.67 mm in 20 mm stock.


