How to Make Fiberglass Stones
- 1). Spray two thin coats of silicone mold release into the silicone mold, allowing the first coat to dry before applying the second.
- 2). Tear the fiberglass mat into 5-inch squares. Cut the fiberglass cloth into squares of the same size with a pair of scissors.
- 3). Put on a pair of rubber gloves.
- 4). Mix a batch of polyester resin with its catalyst in a disposable bucket. The exact mixing ratio will be printed on the resin container.
- 5). Brush a coat of catalyzed resin on the entire inner surface of the silicone mold.
- 6). Press squares of fiberglass mat into the resin, overlapping them by a quarter inch. Cover the entire inner surface of the mold with fiberglass.
- 7). Tap more catalyzed resin into the fiberglass with a paint brush. This will saturate the fiberglass and force out any trapped air bubbles.
- 8). Add two more layers of fiberglass mat and resin, followed by two layers of fiberglass cloth and resin.
- 9). Allow the fiberglass to dry completely until it has hardened.
- 10
Peel the silicone mold off the fiberglass stone. - 11
Cut the jagged bottom edge off the fiberglass with a saw. Put on a pair of goggles and a dust mask for this step. - 12
Paint the exterior of the stone with fiberglass primer. - 13
Paint the stone whatever colors you want. You can use acrylic craft paint, an airbrush or even spray paint (there are many stone effect paints available).
