Acid Type - Coin Community Forum

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Author	Replies: 2 / Views: 2,352
awildeheart Valued Member Australia 295 Posts	Posted 03/19/2014 06:23 am Hi all, after getting the acid verdict back from Downies about https://goccf.com/t/170951, I need to confirm the effect in order to remove the last doubt from my mind about this coin ... and potentially other coins that will cross my palm in the future. I'm wondering what type of acid would do that so that I can sacrifice a few coins to experiment and compare the end result. Anyone know what type of acid I should use and recommend a process to use? Report this Post to the Staff

Sap Moderator Australia 16832 Posts	Posted 03/20/2014 02:51 am To my mind, acid generally doesn't smooth out and flatten detail like this. When I saw the old thread, I was thinking more "rock tumbler" or "sandblaster" damage. As for acids to try, there are all sorts available, even lying around the house. - vinegar (acetic acid) - coca-cola (mixture of carbonic and phosphoric acids) - Lemon juice (citric acid) - battery acid (sulfuric acid) Another off-the shelf acid that should be readily available, with a strength in between the first three and the last one, is hydrochloric acid. They will all attack a bronze coin; I don't know to what extent they will attack cupronickel. Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis Report this Post to the Staff
awildeheart Valued Member Australia 295 Posts	Posted 03/22/2014 02:47 am Thanks for the info Sap. It's good to know that I am not the only acid theory doubter. Any idea how long a coin would have to remain in the various acid baths to loose half a gram of metal? Report this Post to the Staff
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