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Specimen Jars

Spook up your home for Halloween with easy-to-make specimen jars, a creepy craft sure to bring out the mad scientist in you.

Source: The Martha Stewart Show, October 2008


Resources: Encapso K and Sil-Poxy are available from Eyes and teeth can be found at most Halloween stores.


  • Glass cylinder vase or jar

  • Encapso K

  • Plastic paint bucket

  • Mixing tool

  • Halloween teeth and eyes

  • Sil-Poxy Silicone Rubber Adhesive

  • Chopsticks (optional)


  1. Combine two components of Encapso K in a plastic paint bucket and mix for five minutes.

  2. Pour mixed Encapso K into a glass cylinder or jar until the depth is about two inches. Let dry at least two hours.

  3. Using silicone rubber adhesive, glue teeth to hardened silicone surface in jar. Let dry for 15 minutes.

    Tip: Use chopsticks to place teeth inside jar.

  4. Pour another few inches of Encapso K over teeth. Let dry for 15 minutes.

  5. Glue eyes to hardened silicone rubber surface and allow 15 minutes for eyes to dry. Pour one more layer to fill cylinder or jar.

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