Power-tool Joinery: Tongue and Groove

There are many ways to cut this popular edge-to-edge joint.
By Bill Hylton
Pages: 86-88

From the April 2005 issue #147
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A tongue-and-groove joint is an edge joint with a mechanical interlock. The edge of one board has a groove. A matching tongue is formed on the edge of the mating board. The tongue goes into the groove, and the boards are joined.

You probably are most familiar with the joint’s many applications in building construction, such as strip flooring and paneling. In furnituremaking, the tongue and groove is excellent for edge-to-edge glue-ups. If cut precisely, the joint ensures that the faces of adjoining boards come flush easily and that they can’t creep out of alignment as you position and tighten clamps. When the clamps come off, a little scraping and hand-sanding is all that’s needed before moving on.

From the April 2005 issue #147
Buy this issue now