FIG. 1 is a top, front, right side, perspective view of the casting jig of the present invention; FIG. 2 is a front elevation view; FIG. 3 is a rear elevation view; FIG. 4. is a left side elevation view; FIG. 5 is a right side elevation view; FIG. 6 is a top plan view; and, FIG. 7 is a bottom plan view.