The material rotates on the spindle. A grinding or carving tool tends to make the shape because it turns. CNC Lathes are used to help make symmetrical objects like spheres, cones, or cylinders. Many CNC machines are multi-operate and Merge all sorts of cutting. Think about working with augmented truth https://dominicksgter.blogitright.com/38762495/the-ultimate-guide-to-cnc-profile-division