Precious metal clay

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Precious metal clay is a relatively recent invention and consists of a metal powder and a binder that makes up a clay that can be used to form objects of. After drying the clay is sintered in an oven where the binder is burned off and the metal fuses together into a solid object. Metals used varies but common is gold, silver, copper and bronze.

Recovery

Already burned objects can be treated just as other jewellery. Fresh or dried up clay should at first be incinerated to burn off any binder, oil and water. After that treated as jewellery scrap.

Patents

  • US patent 5328775, Moldable mixture for use in the manufacturing of precious metal articles.

References

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