[Jewelry making - Article 00307] - Re: [Orchid] Soldering Platinum and Silver Together?

[James Binnion]

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    Use any of your silver solders that are appropriate for the point in
    construction where you are adding the platinum. Use a paste flux and
    solder as normal. The one difference is to not quench the work after
    soldering or any further heating oprations. The Sterling has a
    tremendously greater rate of thermal expansion and the stresses
    generated from the rapid contraction caused by quenching can break
    the solder bond or even the underlying metal. So slow cool for best
    results. I use this method regulary and once I learned to not quench
    I have never had any problem. 

Jim

James Binnion
jbin AT mokume-gane.com
James Binnion Metal Arts
http://www.mokume-gane.com
360-756-6550
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