How to Make Push Molds for Doll Parts

Written by patti perry
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Plaster of Paris is such a magnificent substance. After carefully sculpting a detailed part of the doll anatomy, the doll maker can cast it in plaster and return the next day to make multiple copies with a minimum of effort. It does not take the expertise of casting in a mould consisting of many pieces. A person can make push moulds for many doll parts. With a simple squishing of the clay into the cavity of the mould, a new appendage emerges.

Skill level:
Moderate

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Things you need

  • Clay
  • Cling film
  • Recycled Gallon Jug
  • Plaster of Paris
  • Heavy cardboard Box
  • Duct tape

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Instructions

  1. 1

    Create a clay doll part that is planned for reproduction in the push mould. Keep this clay creation moist by covering with cling film until the mould is poured over it.

  2. 2

    Take a gallon jug and cut the top 1/3 off of it. This will become a disposable container to use in mixing the Plaster of Paris.

  3. 3

    Mix the Plaster of Paris with water until it is the consistency of yoghurt. Read the instructions on the packaging. The ratio of 2 parts plaster to 1 cup water is the standard.

  4. 4

    Take a heavy cardboard box that is only slightly larger than the object to be moulded.

  5. 5

    Tape the edges securely with duct tape.

  6. 6

    Place the doll appendage with the details face up into the centre of the box.

  7. 7

    Pour the plaster mix slowly over the clay mould

  8. 8

    Tap the box gently to release any air bubbles that might mar the mould.

  9. 9

    Dry overnight.

  10. 10

    Remove the plaster mould from the cardboard box.

  11. 11

    Remove the original clay creation from the mould.

  12. 12

    Push smoothed clay into the mould and remove to reveal the new doll part.

Tips and warnings

  • Wear a mask and do not inhale plaster powder. Plaster powder is made of gypsum, which is a very small particle.
  • The combination of plaster and water create an exothermic chemical reaction that can cause burns. Care must be taken when working with this substance. Plaster actually heats up to the touch as water is added to it.
  • Wear rubber gloves and eye protection.
  • Plaster remnants should NOT be washed down the drain, as they will clog plumbing.

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