ABSTRACT
SHEET-METAL OPERATIONS Many engineering components are produced from a flat sheet of
metal which is cut to shape and then folded to form the finished article. The edges are then secured by a variety of methods such as welding, brazing, soldering and riveting. The accuracy of the size and shape of the finished article depends upon the accuracy of drawing the shape on the flat sheet, known as the development. Allowance is made at this stage for folding or bending, the amount varying with the radius of the bend and the metal thickness.
