> For the complete documentation index, see [llms.txt](https://ms-kb.msd.unimelb.edu.au/machine-workshop/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ms-kb.msd.unimelb.edu.au/machine-workshop/making/step-by-step/joining/tongue-+-groove.md).

# Tongue and Groove

## What is a Tongue and Groove joint?

A tongue and groove joint consists of a protruding tongue from one board that fits into a corresponding groove in another board. It is often used in flooring or timber panelling when you have a lot of pieces next to each other and you want them to be aligned.

![Figure 1. Tongue and Groove Flooring. Designer: Unknown](/files/-MA4_UnmLwvXBbuMZOvR)

## What do I need to make it?

The best machine for making a tongue and groove is the [router table](/machine-workshop/spaces/machine-workshop/equipment/untitled/router-table.md) but it is also possible to use the [table saw](/machine-workshop/spaces/machine-workshop/equipment/untitled/table-saw.md).

## What steps do I take?

Watch this video of making a tongue and groove with dedicated router bits.

{% embed url="<https://youtu.be/zW52zgwAXoQ?t=14>" %}