Butt joint

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A butt joint is a wood joint in which the end of a piece of material is simply placed (or “butted”) against another piece. The butt joint is the simplest joint. An unreinforced butt joint is also the weakest joint, as it provides a limited surface area for gluing and lacks any mechanical interlocking to resist external forces.^[1]

Nonetheless, it generally provides sufficient strength in most cases, particularly when fasteners are used. Additional reinforcement through ties and plates is often used to improve the characteristics of butt-jointed structures. The joint is widely used in many applications due to its simplicity, notably in rough carpentry and construction.