A brake is a metalworking machine that allows the bending of sheet metal.
A cornice brake only allows for simple bends and creases, while a box-and-pan brake also allows one to form box and pan shapes.
It is also known as a bending machine or bending brake or in Britain as a sheet metal folder or just a folder.
The brake consists of a flat surface onto which the material is placed, and a clamping
bar which will come down and hold the material firmly during the bend. This clamping action may
be manual, automatic or operated using a foot pedal. The front, gate-like, plate of the machine is hinged and may be lifted,
forcing the material extended over a straight edge to bend to follow the plate.