切削加工

Also known as trimming, slicing

right|frame|Different types of scissors – sewing (left), paper (middle), kitchen (right) thumb|upright=1.35|A glass cutter, showing hardened steel cutting wheel (far left), notches for snapping, and ball (on end of handle) for tapping Cutting is the separation or opening of a physical object through the application of an acutely directed force.