Why is layer adhesion critical in 3D printing?

Layer adhesion is critical in 3D printing because it ensures the strength and stability of the final part. In additive manufacturing, objects are built layer by layer, and the bond between these layers is essential for the overall integrity of the finished product. Good layer adhesion means that the layers stick together effectively, which prevents issues such as delamination or separation during handling or under stress. This mechanical bond directly impacts how well the final part can withstand loads and resist failure in practical applications.

When layers do not adhere well, the final part may exhibit weaknesses, making it susceptible to breakage or deformation, particularly in areas where stress is concentrated. Thus, strong layer adhesion contributes to the durability and functionality of the printed object, confirming that the printed parts can perform as intended in their designated applications.