A dado is a cross-grain cut in a board. Unlike a groove that runs with the grain, a dado runs perpendicular to the grain. As with grooves, a dado can be a through cut, or a stop cut in the board surface. Often in dado joinery there can be deeper mortises interspersed along the dado to increase glue surface and joint strength. Also, a dado can be the full width of the board (referred to as a housing) or it can be a simple tongue on the edge of a board that will fit into a smaller dado, creating a shoulder. This video was produced for its free video library by The Center for Furniture Craftsmanship in Rockport, Maine. The Center is a nonprofit, international woodworking school dedicated to providing the best possible education in wood craftsmanship and design.
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