Cutting

Cutting is the separation or opening of a physical object, into two or more portions, through the application of an acutely directed force.

Implements commonly used for cutting are the knife and saw, or in medicine and science the scalpel and microtome.

Even liquids can be used to cut things when applied with sufficient force (see water jet cutter).

This progression is seen from kitchen knife, to cleaver, to axe, and is a balance between the easy cutting action of a thin blade vs strength and edge durability of a thicker blade.

It is the process of producing a work piece by removing unwanted material from a block of metal, in the form of chips.

Different types of scissors – sewing (left), paper (middle), kitchen (right)
A glass cutter , showing hardened steel cutting wheel (far left), notches for snapping, and ball (on end of handle) for tapping