The original universal milling machine was designed primarily for the purpose of forming the flutes in twist drills. Its wonderful capabilities, however, were quickly recognized, and its use soon spread to other lines, until today we find that there is an unusually large variety of machine shop jobs that can be done on a modern machine of this type. Straight and angular pieces, and surfaces of an endless variety of irregular contours, together with spur, bevel and spiral gears, twist drills, etc., can be produced. Also such work as drilling, boring, planing, rack cutting, slotting, cam cutting, graduating, etc., can be successfully accomplished. In fact, the full variety of work that can be done on a universal milling machine is still unknown, for new ways of using it are being constantly discovered.
