Even redrawing work when carried out several times, cause the diameter reduction ratio to become small. Because of this, although the inner diameter guide becomes weak and easily breakable and hence can no longer be used, there is no problem because there is no fear of buckling of the drawn side wall part because of the small diameter reduction ratio. These types of redrawing die structures are shown in Fig. 1 and Fig. 2.

The structure of Fig. 1 is suitable for redrawing of products with a flange. The flange part of the product goes on top of the stripper, and the inner diameter of the product is guided by the tip of the punch that is projecting beyond the stripper.

The structure shown in Fig. 2 is structure that is suitable for redrawing of products without a flange. In the case of a product without a flange, the edge of drawing does not become flat but becomes wavy. Because of this, if the drawn edge part of the product is placed downwards, the product becomes slant. Becoming slant is a problem in drawing work. Therefore, drawing the material so that the bottom part of the drawn product is at the bottom causes the drawing process to become stable.

The feature of this redrawing die structure is in the killer pin. The killer pin presses down the stripper according to the timing of drawing, and makes sure that the product is not strongly gripped between the die and the stripper. If there is no killer pin, to begin with, the product is held between the stripper and the die, and the drawing is started thereafter. If this form is used, the plate thickness will not become uniform in the side wall part, and becomes the cause of generation of cracks in the bottom of the drawn product.

The killer pin is held by a spring. At the end of drawing, the spring of the killer pin contracts so that the stripper comes into contact with the die or the positioning plate.