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.
Many manufacturing processes are capable of cutting sheet goods, but have difficulty producing three dimensional objects. Adding a bending process before or after cutting drastically increases the range of things which can be made.
Sheet brakes allow for easy and accurate bending of sheet goods into complex three dimensional shapes useful for creating brackets, boxes, panels, and more.