The Milling Machine
Milling machine
Using a spinning drill bit, a robotic arm is used to shave bits of the material to create the part. While one can cut any shape from a material, the process is slow since only a little bit of material can be cut at a time.
The Lathe Machine
Lathe Machines
Used for making circular parts. When the lathe is turned on, the clamped block of material is spun rapidly. A drill bit then cuts into it, creating circular cuts.