The blank becomes the workpiece-- the piece of metal to be reshaped -- in the metal forming process. For automotive metal forming, the blank is often made of sheet metal, which can be stamped, cut or bent into a shape needed for an automobile's body. Alternatively, it can be a solid block of metal in a cubical or lens-like shape. SHEET-METAL FORMING PROCESSES Dep. of Mech. Eng. Sheet-metal forming Includes cutting and forming operations performed on relatively thin sheet of metal Typical sheet metal thicknesses: 0.4 mm to 6.0 mm Generally are performed on presses using a set of dies (pressworking or pressforming) Sheet metal fabrication is the process of forming parts from a metal sheet. 3D CAD files are converted into machine code, which controls a machine to precisely cut and form the sheets into the final part. Typical forming tools are brakes, punches, and dies which can form angular bends and features.