Things You'll Need
Instructions
Apply a thin amount of resin on the break or crack on the boomerang. The resin should be brushed on each broken edge. The Boomerang Association of Australia states that resin can be used to repair broken boomerangs. Resin can be purchased at your local hardware store.
Hold the two pieces together tightly for a few seconds. The broken pieces should bond quickly onto each other. Place the boomerang into to a vise so it stays together. Allow the resin to dry overnight. The resin will harden and connect the two broken pieces or fill in the crack.
Apply fiberglass tape onto the break or crack. The fiberglass tape provides added security, ensuring that the boomerang does not get damaged again. The Boomerang Association of Australia also states that fiberglass tape, along with resin is used to repair a broken boomerang. You can purchase fiberglass tap at your local hardware store.