Die set 117 is used for bottom forming a given radius for a specific material. It is designed with compensation for spring back of material. Die set 118 is designed for forming a large radius in multiple hits. It may also be used for forming a radius on the edge of the sheet prior to a rolling operation.
Die set 119 is used when forming a radius with an outside flange in one hit if spring back of material is not too great. When ordering, please specify the "A" and "B" dimensions. Die set 120 and 121 have gooseneck style radii punches. Set 120 is used to form a radius with a preformed return flange. Set 121 is used to form a sanitary curl common in the restaurant industry and forms 200° of radius in two hits.