# Dado and rabbet joint (tongue and dado corner)

> What is a dado and rabbet joint?

- Category: Joinery › Edge & case joints
- Kind: Hardware
- Basis: Xem Studio design — geometry computed in the generator from traditional proportions
- Page: https://xemstudio.com/objects/dado-rabbet-joint/ · JSON: https://xemstudio.com/api/geometry?object=dado-rabbet-joint · Plain text: https://xemstudio.com/objects/dado-rabbet-joint/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files Xem Studio Design License (free to use and sell from, not to redistribute as files: https://xemstudio.com/license/)
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 90.0 | 80.0 | 100.0 |

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

## 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 rabbeted tongue on one board in a dado in the other: stronger and better located than a plain rabbet — cabinets and drawer backs.

## Sizes

| dimension | value |
|---|---|
| stock | 15 mm side, 10 mm top, 80 mm deep |
| parts | side, top |
| dado | 5 mm wide, 5 mm deep |
| tongue | 5 × 5 mm on the top's end |
| assembles | the top's tongue drops into the dado |
| holds | the corner square; locks the top against sliding out sideways |

## Where the files are

- Xem Studio: [Joinery design (geometry computed in the generator from traditional proportions)](https://xemstudio.com/) — web — Xem Studio design

## Free STEP/STL (3 parts, Xem Studio Design License, Xem Studio)

Index: https://xemstudio.com/files/hardware/dado-rabbet-joint/index.json · license: https://xemstudio.com/files/hardware/dado-rabbet-joint/LICENSE.md

- dado-rabbet-joint-side: [STEP](https://xemstudio.com/files/hardware/dado-rabbet-joint/dado-rabbet-joint-side.step) · [STL](https://xemstudio.com/files/hardware/dado-rabbet-joint/dado-rabbet-joint-side.stl) — Side with a 5 × 5 mm dado 10 mm below its top
- dado-rabbet-joint-top: [STEP](https://xemstudio.com/files/hardware/dado-rabbet-joint/dado-rabbet-joint-top.step) · [STL](https://xemstudio.com/files/hardware/dado-rabbet-joint/dado-rabbet-joint-top.stl) — Top with a rabbet leaving a 5 mm tongue
- dado-rabbet-joint-assembled: [STEP](https://xemstudio.com/files/hardware/dado-rabbet-joint/dado-rabbet-joint-assembled.step) · [STL](https://xemstudio.com/files/hardware/dado-rabbet-joint/dado-rabbet-joint-assembled.stl) — All parts in their assembled position (each part its own solid)

## Questions

**Why combine a dado and a rabbet?**

The tongue locates the corner and the dado stops it sliding.

## Fits with

- [Rabbet joint (rebate joint)](https://xemstudio.com/objects/rabbet-joint/)
- [Dado joint (housing joint)](https://xemstudio.com/objects/dado-joint/)
- [Drawer lock joint (locking rabbet)](https://xemstudio.com/objects/drawer-lock-joint/)