The correct solder type for Feeder Wire and Rail joints

sjanis0249 <sjanis0249@...>

I am soldering feeder wire and also soldering rail joints on code 100
flex track.

I have some electrical repair solder I just purchased and it says it is
lead free, 96% tin and 4% silver, with rosin flux core.

Will this work?

I see reference to Rosin Core solder that is 60% tin and 40% lead in
some railroad books. Is this better or is my mix better, or does it
matter at all?

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