LowkeeLT demonstrates how to patch a hole in a fiberglass boat hull. First, grind around the edge of the hole to make it smooth. Make an angle that goes towards the hull so that the resin won't get caught and create air pockets. Attach kitchen wax paper to the boat as a non-stick material for the poly resin to set against. Then, put down a flexible cutting board by duct taping the two layers on the outside of the hull and pulling it taut. Attach three layers of fiberglass strips with resin to the inside of the hull. Grade the sizes so the widest piece is on the inside of hull. Let it dry overnight. Tear off the wax paper and the cutting board. Add filler or sand the patch down, as necessary.
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