How to Do Lost Wax Casting

      Lost wax casting is typically used to create small pieces of jewelry. In lost wax casting, carved wax is used to create a mold that is then used to shape molten metal. The finished cast of the metal will have the same shape as the carved wax.


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    Prepare the Mold

  1. 1

    Attach the sprue to the carved wax and then to the base using a wax pen.

  2. 2

    Join the flask to the base.

  3. 3

    Pour the prepared investment into the flask. Use enough to fill the entire flask.

  4. 4

    Allow the flask to set overnight or until the investment is completely hardened.

  5. 5

    Remove the base.

  6. 6

    Heat the flask slowly in a kiln to 1200 degrees F. The heating method you use may vary, depending on the type of metal you are casting.

  7. 7

    Remove the flask after the wax is completely dissipated.

    Cast the Metal

  8. 1

    Place the flask into the centrifugal casting machine or vacuum table.

  9. 2

    Force the molten metal into the mold using the centrifugal casting machine or vacuum table. Follow the instructions provided with your device.

  10. 3

    Submerge the flask in cold or lukewarm water until the investment is almost completely dissolved. Sway it gently in the water.

  11. 4

    Remove the casting from the flask.

  12. 5

    Clean the surface of the cast metal using a small brush.