I don't know whether everyone already knows this but after asking him his advice Goldsmith gave me this tip that i hope he doesn't mind me sharing
"do you know about using a rouge paste mixture to protect earlier solder joins when doing multiple solderings on the same piece. This is just rouge powder mixed with water into a thick paste and when painted onto earlier solder joints it solidifys when heated and protects the earlier solder joins, then after soldering it is washed off under a running tap before pickling, otherwise you will end up with red pickle"
Big thanks James you are a legend!
Tasha x
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