Which joint is a two-sided recess cut along the edge or end of a board?

A rabbet.

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  1. Dado
  2. Rabbet ✔
  3. Mortise

Why: A rabbet is open on two sides and runs along an edge or end. It often holds cabinet backs, shelves or the glass in a frame. A dado runs across the face, and a mortise is a slot or hole.

Huh, didn't know that: Woodcraft's rule of thumb is never to cut a rabbet deeper than two-thirds of the board's thickness.

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References

Answer: Rabbet. A rabbet is open on two sides and runs along an edge or end. It often holds cabinet backs, shelves or the glass in a frame. A dado runs across the face, and a mortise is a slot or hole.

  1. Joinery Made Simple: Rabbets, Dadoes, and Grooves (Woodcraft) www.woodcraft.com/blogs/shop-knowledge-guides/joinery-made-simple-rabbets-dadoes-and-grooves
    A rabbet is a two-sided, open-ended recess that runs along the edge or end of a board
    Checked 2026-10-10.
  2. Joinery Made Simple: Rabbets, Dadoes, and Grooves (Woodcraft) www.woodcraft.com/blogs/shop-knowledge-guides/joinery-made-simple-rabbets-dadoes-and-grooves
    never exceed two-thirds of the stock thickness when determining a rabbet's depth
    Checked 2026-10-10.
  3. Joinery Made Simple: Rabbets, Dadoes, and Grooves (Woodcraft) www.woodcraft.com/blogs/shop-knowledge-guides/joinery-made-simple-rabbets-dadoes-and-grooves
    it creates more gluing surface, providing greater load-bearing capability than a butt joint
    Checked 2026-10-10.

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