- 1). Remove any stones, plastic or wood from the metal objects prior to melting.
- 2). Place a cast iron skillet on a heat-resistant surface. Place objects of the same metal into the skillet. For example, put 10, 14, and 24 carat gold items together.
- 3). Put on the safety glasses. Light the acetylene torch.
- 4). Position the acetylene torch over the top of the metal. Bring the tip of the flame to one-half inch above the metal. Move the flame in a slow circular motion starting from the center, working to the outside edges then back to the center. Continue the process until all metal is melted. Note: The heat time for each pan of metal will differ depending on the amount and type of metal.
- 5). Turn off the acetylene torch. Put on the oven mitt and pour the molten metal into the cast iron muffin pan. Use as many sections of the muffin pan as required.
- 6). Allow the bullion ingots to cool and set for 24 hours. Turn the cast iron muffin pan over. Tap the bottom of each area holding an ingot. The ingots will pop out easily from each area.
- 7). Look at the edge of each ingot and locate the line where the color of the ingot changes. Use a hammer and tap the area with a darker color until it pops from the ingot. Note: The pure metal settles to the bottom of the ingot and is a consistent color such as gold or silver. The slag, or waste material, floats to the top and creates a darker-colored area. The two sections break apart easily once the ingot is totally cooled and hard.
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