Notching is a metal-cutting process used on sheetmetal or thin barstock, sometimes on angle sections or tube. A shearing or punching process is used in a press, so as to cut vertically down and perpendicular to the surface, working from the edge of a workpiece.The design contain accurate dimensions for all parts, and if you need any of these steel sheets which will be cutted using either Laser or WaterJet I could send you DXF files.