Bouncy Balls Recipes:

Products from all 3 recipes don’t last very long, so store the balls in a small zip-lock bag between uses.
Recipe 1 (our favourite):
3 teaspoons water glass (sodium silicate). The cheapest place to buy is from pottery supply warehouses
1 teaspoon alcohol. Use alcohol based hand sanitiser as it smells less but isopropyl alcohol works too
2 drops food dye
Mix together with a spoon or pop stick until it forms a ball then squeeze out as much mixture as possible with paper towels.
If it crumbles add a little more alcohol and press it back together.
Recipe 2:
1/2 teaspoon borax
2 tablespoons warm water
1 tablespoon cornflour
food colouring (optional)
1 tablespoon liquid glue such as Elmer’s
In one bowl, mix the 1/2 teaspoon borax, 2 tablespoons warm water, 1 tablespoon cornflour and a few drops of food colouring if desired. In the other bowl put the 1 tablespoon glue.
Add the borax mixture to the glue in the other bowl. Set the timer for 15 seconds. Let it set for the full 15 seconds before mixing things together.
Stir the mixture until the ingredients are combined and then start rolling the mixture in your hands until it forms a ball. It takes a while for it to dry completely
Recipe 3:
These: http://www.profbunsen.com.au/shop/item/diy-bouncing-ball-kit are just made of PVA powder.
Colour half a beaker of water with food dye. Place a pile of PVA powder into a square of Chux-cloth, roll it up into a ball shape and dunk it into the water for about a minute. Remove it, roll it into shape and let it dry a little.
Recipe 4:
Combine equal parts of polyvinyl alcohol powder and gelatine.
Try 3 teaspoons of each, varying the amount to suit the size needed. Add just enough warm water to wet the powder, add a drop of food colouring and roll in your hands to make round. Leave to dry-it only takes two minutes.
PVA supplier: ChemSupply

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