Wood joints are the heart of woodworking and structural timber construction. Classic joint types include mortise and tenon, dovetail, tongue and groove, and lap joints. Modern timber construction also uses engineered fasteners such as dowels, bolts, nails, and rod anchors. The choice of joint depends on the acting forces, wood species, and intended use. Traditional carpenters mastered elaborate hand-cut joints requiring no metal parts. Today, CNC machines enable precise production of even complex geometries. The load-bearing capacity and durability of a joint are decisive for the structural safety of the entire building or furniture piece.