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A dado (US and Canada), housing (UK) or trench (Europe) is a slot or trench cut into the surface of a piece of machinable material, usually wood. When viewed in cross-section, a dado has three sides. A dado is cut across, or perpendicular to, the grain and is thus differentiated from a groove which is cut with, or parallel to, the grain.
A dado may be through, meaning that it passes all the way through the surface and its ends are open, or stopped, meaning that one or both of the ends finish before the dado meets the edge of the surface.
Dados are often used to fix shelves to a bookcase carcase. Combined with a rebate (rabbet) on an adjoining piece, they are used to make the rebate and dado joint, sometimes used in case goods.
Methods
A Housing/dado can be cut by the following methods:
- electric router using a straight or rebate bit
- circular saw or table saw with multiple passes (depending on width and depth)
- dado set in a single pass
- spindle moulder (wood shaper)
- hand saw and chisel
- router plane
See also
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