How To Make a Sculpture Mold

Do you have a favorite piece of sculpture you would like to recreate? Did the partner of a pair accidentally break? Sculpture molds make it easy to replicate a sculpture as many times as needed. You can recreate a sculpture to give to friends as gifts, or simply replace the one that was broken.

  • Prepare the materials. You will need a sculpture model, clay, 10-gauge coated electrical wire, glue, pallet board, foam board, release agent and rubber. These materials are readily available in arts and crafts stores as well as hardware shops. The size and length of materials needed would depend on the size of the sculpture you would like to reproduce.
  • Getting the shape of the model. Roll out a layer of clay, about half an inch thick, over the pallet board. Lay down the sculpture model sideways. Fill in the gaps in the sculpture using small balls of clay until you reach the halfway point. Using your fingers, smoothen the clay around the sculpture. Create a groove, about half an inch away from the model, at any point on the clay. This will serve as a tool for alignment later on when you cut a similar groove on the other half of the sculpture model.
  • Creating a fill hole and vents. Choose a point in the mold in which an imperfection is least likely to be noticed or can easily be remedied by filing off. This fill hole is where you will pour the casting material into the mold. Create a funnel for the fill hole from the edge of the clay mold to the sculpture. Embed 10-gauge plastic-coated wires halfway into the mold to create vents.
  • Making the mold. Cut the clay around the model so that there is no more than three-quarters of an inch of clay covering it all around. Place the foam board around the clay with at least half an inch of the foam higher than the highest point of the sculpture model. Glue the foam board to the pallet and press the clay against it to keep the mold airtight. Then apply a release agent to the mold and model. Mix some rubber and pour it into the mold slowly in order to prevent formation of air bubbles. Once the rubber has cured, remove the foam board and clay. Wipe the model clean in preparation for making the second half of the mold. Replace the wires.
  • Making the second half. Replace the foam board around the mold and apply a release agent to the mold and model. Place supporting braces on top of the foam board. Mix rubber and pour into the mold slowly, preventing air bubble formation. Remove the foam walls once the rubber cures and separate the two halves of the mold.

Before starting, you could simplify your sculpture model by removing extra or awkward parts. You can make a separate mold for the extra parts. Also, you can use a small measuring cup to create the funnel in the mold. To protect the work area and ensure that it will be easy to clean afterwards, you could use old newspapers or a large drop cloth.


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