Abstract: The subject piercing die is particularly adapted for piercing a hole in a blank having an open interior and an outer wall defining a closed figure. The piercing is done from the interior of the blank through the wall to the outside of the blank. The piercing die includes a base with a slide movably mounted on the base. A guide is movably connected to the slide to control movement of the slide to a straight line movement. A female die having a blank receptacle for holding the blank is mounted on the base. The female die has a cutting aperture extending through a portion of the female die and intersecting the blank receptacle. A male die is mounted on the slide and is positioned within the blank receptacle for mating with the cutting aperture to cut a hole in a blank positioned in the receptacle. The male die cuts a hole in the blank from the interior of the blank through the outer wall to the outside of the blank.
Abstract: A method and apparatus for removing a metal from a liquid solution is herein disclosed. The apparatus includes a receiving tank. A circulating tank is connected to the receiving tank. A circulating pump is connected to the circulating tank. A circulating tank drain pump is connected to the circulating tank. A recovery tank is connected to the circulating tank and the circulating pump. The recovery tank has an anode and a cathode positioned therein. A source of electric current is connected to the anode and the cathode. Metal is removed from the liquid by the method of circulating the liquid between the circulating tank and recovery tank. While the liquid is circulating, the source of electric current supplies a decreasing electric current to the anode and the cathode to collect the metal on the cathode.