This is another machining technique that—like turning—removes material from a workpiece by using a multi-point cutting tool. In CNC milling, the cutting tool and workpiece will rotate in the same direction, but if you decide to go with manual milling, you’ll have the two pieces working in opposite directions.
There are different types of mills you’ll have available, like end, helical, and chamfer mills—which can be horizontally or vertically oriented and have several different axes, all of which will relate to what you’re aiming to machine. There is no shortage of mill machine types either, including hand, plain, universal, and omniversal types, and they’re ideal for making gears, cutting slots and grooves, or creating more complex shapes. You can see an example of an end mill in the illustration down below.
