Why is gluing wood joints a common practice?

Gluing wood joints is a common practice primarily because it prevents movement and significantly increases the load-bearing capacity of the joint. When wood joints are glued, the adhesive creates a strong bond between the pieces of wood, which helps to limit any potential shifting or separation that might occur due to changes in humidity, temperature, or physical stress. This stability is crucial in carpentry, especially in structures that need to bear weight or endure pressure, such as furniture, frames, or load-bearing walls.

Additionally, glue can distribute the load more evenly across the joint, enhancing the overall strength and durability of the piece. This is particularly important in applications where the integrity of the joint will be tested over time. Therefore, gluing not only contributes to the performance of the joint but also helps ensure that the finished product maintains its intended shape and functionality without the risk of failure.