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Soldering gold and platinum


#1

When soldering gold and platinum together make certain to anneal both
parts thoroughly before soldering. These metals expand at different
rates when heated. If not thoroughly annealed stress tears may
develop as the metal cools. Brad Simon CMBJ


#2
    When soldering gold and platinum together make certain to
anneal both parts thoroughly before soldering.  These metals expand
at different rates when heated.  If not thoroughly annealed stress
tears may develop as the metal cools. Brad Simon CMBJ 

Brad: Does this apply only to gold and platinum or does this caveat
apply to other combinations as well, e.g. silver/bronze, gold/silver
etc.? Thanks. K