The first process is stamping in order to silence and draw deeper. Plastic and deep coatings may be used only if the height of the painted area is high. The thickness of the convex and concave walls is b = 51 mm, which can provide sufficient strength, so it is wise to use a composite shape. The advantages of the form are simple structure and depth of application. The disadvantage is the rigid unloading plate (material - 45 steel), which is not suitable for unloading, and stretched parts are used to build on the rigid unloading platform, which complicates the operation and affects productivity.