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Help with a knife blade turned black

Q.
Hello Everyone,

Maybe someone can give advise...

I soldered a sterling silver handle to a metal blade and then put it into the pickle bath I always use for silver. When I removed it the blade was completely BLACK ! I know there can be a reaction between the pickle and metal and sometimes will turn the silver pinkish but I never saw black. I can't seem to get it shiny again even with sanding or buffing! Does anyone have any advice?

Thanks

Leo Eis
- Brooklyn NY
July 30, 2021

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