N_Cook wrote:

It is the absence of lead rather than presence of tin that is causing
the problems, you have tin in both leaded and lead-free solder. It is
the lead that gives the forgiveness, perhaps someone knows the
technical rather than folksy term for this

Sorry, I misread your previous post. I was thinking of the opposite. If
the joint used SnPb originally you would never be able to remove all the
lead, so could you use Pb-free after cleaning?


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