An automotive vehicle includes a body with a front portion and a rear portion. The vehicle additionally includes a spoiler coupled to the rear portion. The spoiler includes a first portion, a second portion, and a cap. The first portion includes a first plastic material, the second portion includes a second plastic material, and the cap includes a third plastic material. The second plastic material is distinct from the first plastic material. The second portion is disposed between the first portion and the cap. The second portion has a through hole extending therethrough. The cap has a diameter exceeding that of the through hole. The first portion and the cap are welded together via the through hole to mechanically secure the second portion to the first portion.

Systems, methods, and apparatus for attaching additive manufactured components. The systems, methods, and apparatus include large format additive manufacturing (LFAM) component having a LFAM interior surface. The first FDM component may be coupled a large format additive manufacturing (LFAM) component having a LFAM interior surface. The first exterior surface may have a first textured shape that is complementary to the LFAM textured shape. The systems, methods, and apparatus include a second fused deposition modeling (FDM) component having a second exterior surface. The second FDM component may be coupled to the first FDM component.