MAC 163-164 Machine Shop Practices III-IV (3 cr.) (3 cr.)Offers practice in the operation of the drill press, engine lathe, vertical milling machine, horizontal milling machine, and the surface grinder. Introduces practical heat treatment of directly hardenable steels commonly used in machine shops. Prerequisite: MAC 161 and MAC 162. Lecture 2 hours. Laboratory 3 hours. Total 5 hours per week.