Abstract: Systems and methods for fabricating multi-material joining mechanisms are described. In one embodiment, a tool assembly includes a main body having an outer surface, first and second enclosed ends, and an internal chamber. A plurality of vent holes is disposed through the outer surface, wherein each vent hole fluidly communicates with the internal chamber. A circumferentially-disposed ridge is formed on and extends outwardly from the outer surface proximate the second enclosed end. A port is disposed through the first enclosed end and is configured to be coupled to at least one of a source of pressurized medium and a vacuum. A drive assembly is operatively coupled to the second enclosed end and is configured to rotate the main body during a portion of a fabrication process. During operation, the internal chamber may be evacuated during a cure cycle, or may be pressurized to release a component from the outer surface.