How To Make Craft Foam

The foam is like silly putty with polystyrene beads in it, that children can mould into different shapes. You can sculpt with it or use it to coat other objects. You can store it to reuse it or allow it to dry, if you want permanent creations. It’s a lot of fun. As with silly putty, it’s very safe, though anything containing food colouring can stain surfaces. Don’t eat the Foam. Although the polystyrene beads are not toxic, they simply aren’t food.

Things You Will Need:

  • 160ml warm water
  • 2 tsp. Borax
  • 240ml PVA glue
  • polystyrene beads
  • Food Colouring
  • 2 large air tight plastic bags

Instructions

  1. Stir the Borax and 80ml of water together in a bowl until the Borax is dissolved. Add small amounts of Borax to the mixture to make it thicker or use up to 80ml of additional water to make it thinner.
  2. Use PVA glue to hold the shape of the final product. Pour the glue and 80ml of water into a separate bowl and mix well. Split this mixture in half before you add the colouring. You should end up with two different colours. Stir in the food colouring one drop at a time until the desired colour is reached.
  3. Open the two plastic bags and place half of the polystyrene beads in each bag. Use one bag for each colour. Pour half the Borax mixture in each bag. Next add half the colour glue mix to each bag. Add more beads or water if the final product is not the desired consistency.
  4. Seal the bags, making sure the air has been removed. Knead the mixture in each bag until it is blended. Check the mixture in the bag after it has rested for 20 minutes and knead it again if necessary.
  5. Refrigerate the bags that hold your homemade foamy science mixture. This will keep the foam soft and fresh. Sculpt or mould the foam into a shape and allow it to dry. The sculpture may be squashed and the foam put back into the bag to be used again.

Tips

  • Polystyrene beads are sold as fillers for bean bags, dolls, stuffed animals, milk bottles and may be called micro beads. Another option is to use a grater to break up Styrofoam cups into beads.
  • Experiment with the amounts in the recipe until you find the right consistency for your craft project.

Where to Buy Borax online UK

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