[Jewelry making - Article 00574] - Re: [Orchid] Platinum sizing

[M. Clodius]

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    Hi , I will toss my two cents in here ..Since we do not laser here [
    yet  :-)]....We have made a rule ; all generic stamped [ 950  or just
    Pt / Plat] or unstamped , but is platinum . Are soldered  when being
    sized , with  the .900  [ or "easy"] plumb plat solders ,[ we use
    PM-Wests ]. When  it is of our own manufacture , [we are using .952Pt
    /  ruthinium   for both casting and most fab work ] or is identified 
    900/100 pt/irid  then we will weld/ or use  .950 [ "hard"] plumb
    solder as best suits  the piece . This plumb solder is great  , and
    with this "rule"  we have had no more unforseen melting incidents . I
    still magnet test for cobalt alloy , but am not sure why [?] We have
    found this plumb solder is "better "[color and strength] than 
    regular 1400 / 1500 solders that we would have used in the past .
    Several posts have mentioned Palladium in the same context as
    platinum , the lightness of palladium makes its identification
    automatic [ at least after the first time you hold any  ;-)  ]  its
    almost half the "weight " of platinum , and is quite remarkable in
    heft . 

Mark Clodius



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