The ornamental design for a mold for use in rail repair, as shown and described.
FIG. 1 is a top, left side, and end perspective view of a mold for use in
rail repair showing our new design, the undisclosed end being a mirror
image of the end shown;
FIG. 2 is a perspective view in exploded condition, the undisclosed
interior portion of each mold half being a mirror image of the respective
portions shown;
FIG. 3 is a right side elevational view in exploded condition; and
FIG. 4 is a top plan view in exploded condition thereof.