How to Make Ballistic Foam

Ballistic gelatin, sometimes colloquially called "ballistic foam," is often used by ballistics labs to test the penetration capabilities of different types of ammunition. Ballistic gel is intended to be the approximate density and texture of human or animal flesh, so as to test the potential effects of weaponry on a human target or animal prey. Ballistic gel can be made at home with ballistic gel mix or with an improvised recipe that uses household ingredients.

Things You'll Need

  • Kind & Knox Ballistic Gelatin mix or ordinary Knox Gelatin mix
  • Large pot or Double-Boiler if available
  • Shaped mold
  • Silicone spray or non-stick cooking spray
  • Candy thermometer (or other similar cooking thermometer)
  • Wooden Spoon or Stirring Stick
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Instructions

    • 1

      Pour cold water into the large pot, then carefully add the gelatin powder while stirring the mixture. The correct ratio for Knox gelatin is approximately one pound of gelatin to one gallon of water. If you are using specialized ballistic gelatin mix or ballistic foam mix, check the box for the correct mixing ratio. Stir the mixture slowly until all of the gelatin powder has been moistened; avoid creating bubbles or introducing air to the mixture.

    • 2

      Set the gel/foam mixture in a refrigerator for two hours. This allows the gelatin to chill and hydrate, in a process known as "blooming." Remove the mixture from the fridge and place it over medium heat. A double-boiler or similar system is most effective at providing consistent heat that will not burn the gelatin. Stirring gently to minimize introducing air, gently heat the gelatin mixture until all of the gelatin is melted or dissolved. Monitor the mixture's temperature using a candy thermometer or similar thermometer, and don't let the mixture's temperature exceed 130 degrees Fahrenheit.

    • 3

      Coat the inside of your mold with silicon spray or similar non-stick coating. If you do not have a shaped mold, plastic containers or similar vessels can be used to create shaped chunks of gel. Carefully pour the gelatin mixture into the mold, and place the mold in a refrigerator to cool and set for 36 hours. To unmold the gel, carefully unstick the gelatin from its container with a rubber spatula or similar implement, and overturn the mold. The gel should come unmolded without difficulty due to the non-stick coating.