The part is to be milled, using a 20 mm diameter end mill with four teeth. Write the APT geometry and motion statements for this job. Assume that preliminary passes have been completed so that only the final pass ("to size") is to be completed in this program. Cutting speed = 500 rev./min, and feed rate = 250 mm/min. The starting slab thickness is 15 mm, so no machining is required on the top or bottom surfaces of the part. The three holes have been predrilled for fixturing in this milling sequence.