General information about the prerequisites for drawing hollow parts. The drawing of hollow parts requires a good understanding of material properties. Favorable properties that are desired in materials, such as high tensile strength and ductility, are not always present. Therefore, one is compelled to adapt the tools to the materials. The material should only be stressed according to its technological properties, as any overloading increases the workpiece rejection rate. One should especially be cautious about blindly transferring high sheet stresses from one material to another. Material testing and storage. The following discusses testing methods as they occur in economically operating precision engineering companies and fulfill their purpose. It is noted that material tests are only conducted to the extent necessary.