Nibbling is a mechanical process, often used on sheet metal, designed to weaken a certain area of material to facilitate breakage. It is carried out with a nibbler shear connected to a pantograph where possible by means of a numerical control machine, which makes many small holes, not superimposed on each other, but in any case close together in order to create a cutting line, rectilinear or curvilinear. that is a function of a specific project elaborated by the CNC, thus obtaining any type of cutting template.