This method is done by taking an object, such as the rubber pig below, or a wax carving and making a rubber mold from the rubber or wax object, then putting the wax into a metal container and pouring a plaster substance around the wax wait for the plaster to harden, then put the plaster mold into a kiln and melt the wax away then pour the metal, (Gold, silver or Platinum) into the plaster mold and from there you get a metal piece that will be polished.

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