[Jewelry making - Article 00022] - Re: [Orchid] [How2] Platinum inlays

[Peter W. Rowe]

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>        I am currently working on a wide ladies ring in 14k y.g.
>     which the customer requests to be inlaid with platinum in a
>     pattern on each side. I was told by an experienced jeweler
>     that, because of the difference in the rates of expansion &
>     contraction, my relativly thin platinum pieces would crack.  Is
>     this the case and what is recommended to prevent this from
>     happening? 

    The platinum won't crack.  The solder seams are what's at risk. 
    Generally, if both pieces of metal are well annealed, you won't
    have problems.  Besides, if the platinum pieces are just inlays,
    they're relatively small in relation to the gold, and will simply
    adjust themselves to it.  Like I said, thoroughly anneal the
    platinum first.  Use the hardest solder you feel comfortable
    with for a good color match and minimal solder seam pits. 

Peter Rowe



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