plating, anodizing, & finishing Q&As since 1989
Tarnishing Coins for Science Project
My son is doing a science fair project for his school. He needs to know any ways to tarnish brass or coins without the actual process of aging. If you could write back before the end of the month, that would be very helpful due to the fact that this is due in March, 2001.
Thanks for taking the time to read this and for any help you can provide us with, Joseph
P.S. I need four tarnishing agents or products.Joseph Edward Hutchings
- Midlothian, Virginia, USA
Hi Joseph. I'd try heat as one, water as a second, wet salt as a third, and bleach [adv: bleach/sodium hypochlorite in bulk on eBay or Amazon] as a fourth. They're not all guaranteed to tarnish the coins, but they are likely to educate. Best of luck.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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