Abstract: A self-centering jig for planar articles having a vertical and horizontal centerline, capable of centering in both the horizontal and vertical directions, is disclosed. The self-centering jig comprises a jig body a having a template section, a first pair of operatively connected arms extendibly mounted in the jig for uniform horizontal movement in opposite directions from a vertical centerline, and a second pair of operatively connected arms extendibly mounted in the jig body for uniform vertical movement in opposite directions from a horizontal centerline. The template section may be removable, and can be interchanged with other templates to permit drilling of different patterns using the same jig. The template section may also contain a plurality of holes for a plurality of patterns, such that a single template may be used to drill several patterns.