Patent ID: 8188422

Claim:
A die assembly comprising: a cylindrical die housing having a hollow center, an open end, and a bottom; a cylindrical die base sized to fit through the open end and inside the hollow center of the die housing, the die base having a first circular surface, a second circular surface, spaced apart from the first surface, having a diameter less than the first circular surface, a third circular surface, spaced apart from the second surface, having a diameter less than the second circular surface, a fourth circular surface, spaced apart from the third surface, having a diameter less than the third circular surface, and a dowel, protruding from and orthogonal to the fourth surface, having a diameter less than the fourth circular surface; a first die wall, having a hollow half-cylinder shape, sized to fit on the first circular surface of the die base, through the open end of the die housing, and inside the hollow center of the die housing; a second wall, having a hollow half-cylinder shape, sized to fit on the first circular surface of the die base, through the open end of the die housing, and inside the hollow center of the die housing; and a die top sized to fit through the open end and inside the hollow center of the die housing, the die top having a first circular surface, a second circular surface, spaced apart from the first surface, having a diameter less than the first circular surface, a third surface, spaced apart from the second surface, the third surface having a circular shape with an extension protruding therefrom, the circular portion having a diameter less the second surface and the extension having a diameter equal to the diameter of the second surface, a fourth surface, having a circular portion and an extension protruding from the circular portion, the circular portion spaced apart from the third surface and having a diameter less than the circular portion of the third surface and the extension having a diameter equal to the diameter of the second surface, and an aperature extending through the second surface, the third surface, and the fourth surface.