Cleaning Copper Pennies
Why do you use salt in vinegar or lemon juice when cleaning copper pennies?Theresa Garcia
- Kansas City, Kansas, USA
The reason I use it is to see for myself what is behind the many student Q&A's about it on this site, Theresa :-)
But we've now prepared an FAQ on Cleaning Pennies that will hopefully answer all of your questions. Good luck.
Ted Mooney, P.E. RET
Pine Beach, New Jersey
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