How to Apply PVA to a Mold
- 1). Apply high-quality wax with a mirrored finish to the mold. Use a lint-free cloth and rub the wax into the mold until well covered.
- 2). Apply two more coats in the same manner.
- 3). Hold the PVA can 12 to 18 inches from the surface of the mold, and hold down the nozzle. Mist the entire surface of the mold with a light coat. Allow it to dry for 15 minutes. Repeat.
- 4). Spray on a heavier coat of the PVA. This is often called a flow coat because you should be able to see the PVA flowing slightly on the mold. Allow it to dry for 30 to 45 minutes and repeat for one to two more coats.
- 5). Allow the mold to dry for at least an hour after the final PVA coat before casting.
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