How do you mend a cracked shutter staple? To start, clear away the broken staple from the louver with a pair of needle-nose pliers. Then use some adhesive (like wood glue or epoxy) to cover the legs of a new staple. weave the staple into the loop on the louver and direct its legs into the same staple holes on the tilt rod. For new shutter staples, call us at 480-485-7743.