A dado joint is made by cutting a rectangular groove entirely across one member into which the end of another member fits.

Dadoes are cut across the grain of the wood.

 

Blind dado joint

Corner dado and rabbet joint

Dado and rabbet joint

Dado joint strengthened with a mortise and tenon joint

Double dado joint

Sliding dovetail joint

Sliding half dovetail joint

Stopped dado joint

Stopped sliding dovetail joint

Stopped sliding half-dovetail joint

Through dado joint

Tongue and dado joint