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How to Make a 3D Model of the Ear

A 3D model of an ear can be used for prosthetics, masks, art pieces and sculptures. There are many ways to do this using computer-aided design, computer generated imagery and technology by Makerbot called the Thing-O-Matic that prints three dimensional objects made of plastic. With the right materials you won't need any fancy machines or a computer to make a 3D model of an ear, just careful hands.

Things You'll Need

  • Safety goggles
  • Shower or bald cap
  • Dental box wax
  • Alginate
  • Plaster of Paris
  • Dental alginate syringe kit
  • Ear plug
  • Light grit sandpaper
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Instructions

    • 1
      Generic industrial ear plugs may be used to protect the ear canal.

      Position yourself to the subject in a way that you can comfortably stand in the same place for 15 minutes or more.

    • 2

      Tilt the subject's head so that the ear to be casted is prominent. Use the dental box wax to cordon off the area. Make sure the subject is relaxed and comfortable and gently place an ear plug in the ear canal of the ear to be cast.

    • 3

      Place the alginate inside a syringe, following the proper instructions.

    • 4

      Place the syringe at the bottom of the ear just outside the entrance of the ear canal. Squirt the alginate onto the ear and then outward all around the ear to get coverage of all its features. Refer to supplier instructions for drying time of the alginate.

    • 5

      Peel away the alginate carefully after it has dried. This is called a negative mold.

    • 6

      Secure the mold on a surface that will not cause the shape to change. This can be a towel shaped like a birds nest or something similar. Pour the plaster into the mold. Check the supplier directions for drying time.

    • 7

      Peel away the alginate carefully from the plaster. Examine the ear model for imperfections. Use light grit sandpaper to smooth away any imperfections.

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Sculpture

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