operation can be done on drill presses, turret lathes Drilling and engine lathe. On engine lathe, the drill is held in the tail stock spindle and the feed is given manually by rotating the hand wheel of the tail stock. Here, the drilling time cannot be calculated with the Drill cutting speeds, in general, are lower than help of a formula. speeds. The harder the material to be drilled, the cutting turning lower should be the cutting speed. The feed varies with the diameter