Tooling, Jigs, & Assembly Fixture Design: Own end-to-end mechanical design of production tooling-including precision assembly jigs, alignment nests, press-fit tooling, ergonomic lift/handling equipment, and mechanical verification fixtures using 3D CAD (NX or SolidWorks). Joining & Fastening Technologies: Establish and qualify robust fastening processes, including torque-tension specifications, torque-angle control, bolt pre-load engineering, and press-fit/interference-fit operations (bearings, bushings, dowels).