What type of joint failure is most often attributed to insufficient adhesive in the joint?

Insufficient glue in the joint is commonly recognized as a major factor in joint failure because it directly affects the bond strength between the materials being joined. For a joint to perform effectively, the adhesive must be applied adequately to form a robust, cohesive bond.

When the adhesive is not applied in sufficient quantity, it cannot fill the necessary gaps and create a proper bond across the joint surfaces. This lack of adequate glue can lead to weak points that are vulnerable to stress, leading to premature joint failure under load. Additionally, improper curing or inadequate spread can result in a bond that does not develop its intended strength, further compromising the integrity of the assembly.

While the correct quantity of adhesive is crucial, other factors such as the quality of the surface structure or the exact adhesive formulation also play a role; however, those aspects often hinge on how well the adhesive is applied. The specifics of proper adhesive application fall within foundational principles of woodworking and carpentry, asserting the importance of technique alongside material selection.