AmCon Cincinnati Advanced Design & Manufacturing Expo will display products like 3D Printing, robotics, assemblies, electronics, machining, packaging, prototypes, metal, finishing, coatings, tube bending fabricating, and much more. AmCon regional expos are a cost-effective way to find suppliers of contract manufacturing and job shop services. Find suppliers of hundreds of services under one roof. Free Admission, Free Attendee Parking, Free Seminars. Meet face-to-face with some of the finest job shops and contract manufacturers from throughout the United States.