The two most basic and oldest metal working operations are shearing and bending. Shearing is defined as the mechanical cutting of large sheets of metal into smaller pieces of predetermined sizes. A shearing operation that completesan entireperimeter is known as blanking, with the resultingwork-piecebeingcalledblank. Bending is defined as the creation of three dimensional shapes out of two dimensional stock. There is virtually an unlimited variety of shapes that can be produced in both sheetmetal and plate thickness’ by bending.