In this video I experiment with lost foam casting by attempting to turn Styrofoam cups into metal. I used drywall joint compound to coat the Styrofoam and allowed it to dry before dissolving the foam with acetone and then burying the cups in sand. This can be a great way to preserve the detail on foam objects.
Lost foam casting is a process used to create complex metal pieces and parts in which molten metal evaporates a foam mold being held still with sand.
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