How to Cast a 3D Santa Claus Model with Platinum-Cured Silicone

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In this article, we will demonstrate how to use platinum-cured silicone to make a 3D Santa Claus model. With detailed steps and some handy tips, you can swiftly create a flawless silicone mold and cast a 3D model.

colored santa claus modelcolored santa claus model

Tools & Materials

  1. Original model: Santa Claus

  2. RTV-4130 platinum-cured silicone

  3. Vaseline mold release agent

  4. Electronic scale

  5. Brush

  6. Plaster

  7. Mixing container + stirring stick

  8. Cylindrical mold frame

Step 1: Prepare the Original Model

First, thoroughly clean and dry the 3D Santa Claus model. Evenly apply a layer of Vaseline mold release agent to the surface of the original model. This step ensures that the silicone can be easily separated from the original model after curing.

apply release agentapply release agent

Step 2: Mix the Silicone

Estimate the amount of silicone needed, and weigh out parts A and B of the platinum-cured silicone in a 1:1 ratio. Mix the two parts thoroughly. You can also add silicone pigment during the mixing process if desired.

  • weigh silicone part Aweigh silicone part A
  • weigh silicone part Bweigh silicone part B
  • stirring liquid siliconestirring liquid silicone
  • add blue silicone pigmentadd blue silicone pigment

Step 3: Apply the Silicone

Because the Santa Claus model has intricate surface details, start by applying a thin layer of silicone to the surface of the original model. Use a toothpick to pop any bubbles. This step is crucial for making a perfect mold.

  • apply liquid siliconeapply liquid silicone
  • apply siliconeapply silicone

Step 4: Secure the Original Model

Secure the original model and cover it with the mold frame. Ensure the bottom of the mold frame is sealed with hot glue to prevent the liquid silicone from leaking out.

  • drying siliconedrying silicone
  • building the framebuilding the frame

Step 5: Pour the Silicone

After ensuring that the first layer of silicone is bubble-free and partially cured, pour in more silicone until it covers the highest point of the original model with an additional 0.5-1 cm of height.

  • pour liquid siliconepour liquid silicone
  • pour siliconepour silicone

Step 6: Remove the Mold

Wait for the silicone to fully cure (4-6 hours), then cut the mold in half to remove the original model. It is recommended to cut the mold in a zigzag pattern to facilitate easier reassembly later.

  • wait for the silicone to curewait for the silicone to cure
  • fully cured siliconefully cured silicone
  • cut siliconecut silicone
  • trimming siliconetrimming silicone

Step 7: Reassemble the Mold

Reassemble the cut silicone mold and secure it with rubber bands.

  • recombination of siliconerecombination of silicone
  • combined fixed siliconecombined fixed silicone

Step 8: Pour the Plaster

Pour plaster into the mold and gently shake the mold to reduce bubble formation. For a perfect cast, it is recommended to use a vacuum device.

  • pour the plasterpour the plaster
  • fill with plasterfill with plaster

Step 9: Touch Up the Mold

After the plaster has set (about half an hour), open the mold and make simple repairs to any flaws. Finally, spray on some color, and you have a perfect Santa Claus replica.

  • separation moldseparation mold
  • santa claus plaster modelsanta claus plaster model
  • santa claus modelsanta claus model
  • 3D santa claus model3D santa claus model

By following these steps, you can easily use platinum-cured silicone to create a beautiful 3D Santa Claus model. It's both fun and practical. Happy crafting!

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