Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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How to tarnish coins for school project

2001

Hi,

I'm doing a project at school on 'How to tarnish coins' and I am just wondering if you could send me some information on how to tarnish coins. This project is due in a weeks time and could you please send me some information on how to tarnish coins a.s.a.p.

Thanks for taking the time to read this and thanks for any information you can supply me with.

Danny Melki
- Sydney, New South Wales

It will depend on what metal the coins (or the surface of the coins) are made of, Danny, but I think you will be able to tarnish them in a very hot oven or broiler easy enough. Tarnishes are generally oxides or sulfides, so you'll get fastest tarnishing in a wet or hot oxygen-rich or sulfur rich environment. So you should also be able to tarnish them by spritzing them with salt and vinegar ⇦in bulk on eBay or Amazon [affil links] .

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2001

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