# Drawbore mortise and tenon joint

> How far is a drawbore hole offset?

- Category: Joinery › Mortise & tenon joints
- Kind: Hardware
- Basis: Xem Studio design — geometry computed in the generator from traditional proportions
- Page: https://xemstudio.com/objects/drawbore-mortise-and-tenon-joint/ · JSON: https://xemstudio.com/api/geometry?object=drawbore-mortise-and-tenon-joint · Plain text: https://xemstudio.com/objects/drawbore-mortise-and-tenon-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 |
|---|---|---|
| 80.0 | 80.0 | 20.0 |

**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).
- The tenon's hole is offset toward the shoulder, so driving the peg pulls the joint tight — no clamps or glue.
- The peg overlaps the tenon by the 1 mm drawbore offset on purpose: that overlap is what pulls the joint tight.

## Sizes

| dimension | value |
|---|---|
| stock | 20 × 20 mm square |
| parts | stile, rail, peg |
| tenon | 15 × 6.67 mm, 15 mm long |
| peg | Ø5 mm |
| offset | 1 mm: the tenon's hole is nearer the shoulder |
| assembles | tenon in, peg driven through: it bends and pulls the shoulder tight |
| holds | pull-out, and keeps the shoulder closed |

## 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 (4 parts, Xem Studio Design License, Xem Studio)

Index: https://xemstudio.com/files/hardware/drawbore-mortise-and-tenon-joint/index.json · license: https://xemstudio.com/files/hardware/drawbore-mortise-and-tenon-joint/LICENSE.md

- drawbore-mortise-and-tenon-joint-stile: [STEP](https://xemstudio.com/files/hardware/drawbore-mortise-and-tenon-joint/drawbore-mortise-and-tenon-joint-stile.step) · [STL](https://xemstudio.com/files/hardware/drawbore-mortise-and-tenon-joint/drawbore-mortise-and-tenon-joint-stile.stl) — Mortised member: peg hole through both cheeks
- drawbore-mortise-and-tenon-joint-rail: [STEP](https://xemstudio.com/files/hardware/drawbore-mortise-and-tenon-joint/drawbore-mortise-and-tenon-joint-rail.step) · [STL](https://xemstudio.com/files/hardware/drawbore-mortise-and-tenon-joint/drawbore-mortise-and-tenon-joint-rail.stl) — Tenon: peg hole offset 1 mm toward the shoulder
- drawbore-mortise-and-tenon-joint-peg: [STEP](https://xemstudio.com/files/hardware/drawbore-mortise-and-tenon-joint/drawbore-mortise-and-tenon-joint-peg.step) · [STL](https://xemstudio.com/files/hardware/drawbore-mortise-and-tenon-joint/drawbore-mortise-and-tenon-joint-peg.stl) — Ø5 mm peg, in the stile's hole
- drawbore-mortise-and-tenon-joint-assembled: [STEP](https://xemstudio.com/files/hardware/drawbore-mortise-and-tenon-joint/drawbore-mortise-and-tenon-joint-assembled.step) · [STL](https://xemstudio.com/files/hardware/drawbore-mortise-and-tenon-joint/drawbore-mortise-and-tenon-joint-assembled.stl) — All parts in their assembled position (each part its own solid)

## Questions

**How much offset for a drawbore?**

1 mm here for a Ø5 peg in 20 mm stock; about 1/16 in is usual in furniture.

## Fits with

- [Pegged mortise and tenon joint](https://xemstudio.com/objects/pegged-mortise-and-tenon-joint/)
- [Blind mortise and tenon joint](https://xemstudio.com/objects/blind-mortise-and-tenon-joint/)