netneut
finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing


Finishing.com has been free for 22 years,
but without net neutrality we could soon
cease to exist. Do us a solid, click on
the banner, and contact congress today!
HomeFAQsBooksHelpWantedAdvertiseForum
topic 9709

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


(2001)

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 sulphides, so you'll get fastest tarnishing in a wet or hot oxygen-rich or sulphur rich environment. So you should also be able to tarnish them by spritzing them with salt and vinegar.

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey



This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView This Week's HOT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.