How to Make a Kidney Mold

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When teaching students about anatomy and human biology, it is helpful to have a few visual aids to allow the students to see what different body parts and organs look like, such as kidneys. Although a human kidney is roughly the size of a fist, a smaller model of a kidney can be created out of simple craft materials. To make a kidney mold to use for making kidney models, it is important to follow a few basic guidelines.

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You can reuse your kidney mold as many times as you like to create kidney models.

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Things You'll Need

  • Large Dried Kidney Bean

  • Knife

  • Polymer Clay

  • Cookie Sheet

  • Oven

Step 1

Roll the polymer clay into a quarter-sized ball.

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Step 2

Slice the ball in half with a knife.

Step 3

Press a dried kidney bean into one half of the clay.

Step 4

Place the other half of the clay on top of the first half.

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Step 5

Squeeze the re-formed ball slightly.

Step 6

Carefully separate the halves and remove the dried kidney bean.

Step 7

Place the clay halves onto a cookie sheet.

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Step 8

Bake the clay halves for 10 minutes in a 200-degree oven.

Step 9

Allow the clay to cool completely.

Step 10

Press a pea-sized amount of clay into one half of the kidney bean mold.

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Step 11

Place the second half of the mold on top of the first, and press them together. When you remove the halves, there will be a kidney shaped model that can be baked and used in an anatomy project.

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