How to Make Fimo Molds

Written by kelly sundstrom
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How to Make Fimo Molds
You can make a durable mould with Fimo clay. (Jupiterimages/Polka Dot/Getty Images)

When you make a mould using plaster, the mould can often be inflexible. One alternative is to make a flexible mould with Fimo clay. This plasticine, polymer-based clay is ready to use after it is baked in the oven. Plaster moulds, on the other hand, take longer to cure. Once finished, you can use the Fimo mould to make repeated castings of objects, just as you would with a plaster mould.

Skill level:
Moderately Easy

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Things you need

  • Fimo polymer clay
  • Clay wire
  • Baking tray
  • Oven

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Instructions

  1. 1

    Knead 0.454kg. of Fimo polymer clay for 3 minutes to 4 minutes. This will remove air bubbles inside the clay, which can cause the finished clay mould to break apart. Form the Fimo clay into a ball.

  2. 2

    Slice the Fimo ball in half with a clay wire. The clay wire will slice the clay with a clean edge.

  3. 3

    Place the item you want to mould in between the two Fimo clay halves, and press the two halves around the item. Squeeze the ball firmly around the item.

  4. 4

    Peel the two halves of Fimo clay apart and remove the item. There will be an impression of the item on both halves.

  5. 5

    Place the moulded FImo clay halves onto a baking tray with the impression sides facing up. Bake the Fimo moulds in a 200-degree Fahrenheit oven for 15 minutes. Let the moulds cool for 1 hour before using them to make castings.

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