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 Replies: 30 / Views: 3,367 |
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Pillar of the Community
United Kingdom
1077 Posts |
Can we have that link again? Thanks.
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Pillar of the Community
United Kingdom
1077 Posts |
I wouldn't recommend anything where you have to rub either. Even if what you are rubbing with is soft enough, you could move traces of dirt etc. about on the surface of the coin with the cloth and thereby scatch the surface. Only use on coins that are XF and below.
I have a preference for my silver coins to be white rather than grubby and tarnished (I don't mean nicely toned, I mean black), and have found a silver dip that does no surface damage but removes the tarnish very well without rubbing.
It's a UK product so probably not available overseas. But I am sure every country must have something with the same ingredient in. It contains thiourea if that means anything to anyone, apart from the obvious!
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Pillar of the Community
 United States
1415 Posts |
Well, it's about time the KurtS comes on board to take responsibility  I don't plan on any rubbing. The current plan is to wait two weeks then rinse with soapy water then rinse again with distilled water. Pat dry on cotton cloth. Then take pics to show how it went. From there I will take suggestions on how to proceed if required. Hopefully all will be well.  After a day, seems like no change. Oil still clear. |
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Pillar of the Community
United Kingdom
1077 Posts |
Looked up thiourea on wikipedia, has the chemical breakdown etc.
Says it is the main ingredient of a product called Tarnx, anyone have any experience.
Also could any of our resident chemists advise on it? BadThad?
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Moderator
 United States
16679 Posts |
Quote:
I'm ready to clean  NO! Don't do it! swcoin.ecrater.com
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Pillar of the Community
United States
1691 Posts |
Long slow soak in extra virgin olive oil...4-6 months does wonders for copper
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Pillar of the Community
United States
2669 Posts |
Here is BadThad's Verdi-Gone. I've tried it - it does an excellent job, as long as you pay attention and don't overdo it. Very mild. Read through the postings and see if you'd like to try it (I don't know if he still has any for sale, but it doesn't hurt to ask  ). He tested it on a 1909-S VDB, I believe, and it was slabbed by NGC. https://goccf.com/t/30324https://goccf.com/t/33105Good luck! Eagerly awaiting pictures of your mineral oil soak, as well  |
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Pillar of the Community
United States
1415 Posts |
xshift,
I have BradThad on the list of options. I am trying the non-chemical methods first and if required more horsepower later.
atlashealth,
Instead of using olive oil, I was thinking some good 10W30 motor oil. Has some detergents as well and not harmful to metal.
What do ya think?
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Valued Member
United States
74 Posts |
I don't know about the motor oil. I just don't clean coins in anything stronger that olive oil, and I think you should just learn to like the coin if that doesn't work. If you can't like it, you can usually find a new one...unless you just soaked your 1907 roman numerals high relief lettered edge in sulfuric acid and it dissolved.
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Pillar of the Community
United States
1415 Posts |
Alex,
Sulfuric acid will not dissolve gold, if that is what you mean.
I suspect soaking in olive oil as it goes rancid after awhile. At which time I think 'acids' are created which would attack copper.
Motor oil does not suffer from that affliction. It is made to come in contact with metal for long periods of time. Also there are detergents included to dissolve carbon deposits. Sounds like a good plan to me.
I also do not think the mineral oil will affect it as well.
I am doing this as there is a lot of threads about cleaning. I amount I paid for this coin was minimal, but the rewards if it turns out in better condition would be a plus.
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Bedrock of the Community
United States
17884 Posts |
Motor oil is meant to be in contact with metal for a long time and it probably won't hurt a coin. The detergents on the other hand are an unknown quantity. Yes they may help dissolve carbon deposits, but that is seldom a problem with coins (Carbon spots are not usually carbon at all, just black.) And these detergents are designed to mostly be around steel or aluminum alloys. There effect on coinage alloys is unknown. And discoloration of the steel of aluminum alloys is not something the motor oil developers would worry about. They want to make sure that the wear is reduced, they don't care if the metal changes color, just that it keeps functioning. I don't know if they still do but many motor oils used to contain sulfur compounds. I think I would stay away from motor oil until I had run some experiments on junk coins. Quote:
I suspect soaking in olive oil as it goes rancid after awhile. At which time I think 'acids' are created which would attack copper. The olive oil is slightly acidic and over time it will lighten the color of the coppers soaking in it. Extra virgin oil has the lowest acidity and later pressing and lower grade olive oil have higher acid levels. The acid also helps a little with the break up of depsits on the coin. It's kind of a balance. Mineral oil will soften deposits but has no acids to help break them loose. It also will not harm the metal surface. An acid will break up and dissolve deposits but doesn't soften them and attacks the surface of the metal. Olive oil has both oil to soften and acid to break up but the acid level is very low so is not likely to damage the metal surface. But since the acid is weak it is a sloooow process. |
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Pillar of the Community
United States
1415 Posts |
Well I couldn't wait the entire 2 weeks. I made it 10 days. What do you think of the results. In mineral oil, rinsed in soapy water then distilled water. Pat dry. No rubbing of any surfaces.   |
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New Member
Canada
36 Posts |
LeeBreeze asked about a product called Tarnx. It contains an acid (fulmaric?) which will etch the luster of mint silver...making it slightly dull.
I wouldnt use anything that contains even a mild acid like citric.
Theres a kid on Youtube cleaning coins with tabasco sauce!!
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Bedrock of the Community
United States
20753 Posts |
Keep on experimenting. Once started there is no turning back. A cleaned coin is a cleaned coin. Some things to remember though.
I suggest you only use products you already have. To go out and purchase substances that may or may not work is just spending money unnecessarily. And some of the items around your house are just as good. Over the years I've experimented with Olive Oils, Tomato Juices, Lemon and/or Lime Juices, Vinegar, hot water, Acetone, finger nail polish remover, motor oils, paint thinners, spit, nasal sprays, eye glass cleaners, laundry soaps, baking soda and water paste, dish soaps and on and on and on.
The main thing is to not rub. Just allow the stuff, whatever it is, to work or not.
The next important thing to remember is to not use any of the above for food you eat afterwords.
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Bedrock of the Community
United States
17884 Posts |
Quote:
The next important thing to remember is to not use any of the above for food you eat afterwords. Aw why not? They used to throw an old large cent like that into the pickle barrel to make the pickles a nice green color. (The pickles turned green from absorbing the copper acetate formed as the vinegar in the barrel dissolved the large cent.) Of course it made the pickles slightly poisonous, heavy metal poisoning, but what's a little risk. Just don't eat too many pickles. Edited by Conder101
11/21/2008 12:07 pm
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Replies: 30 / Views: 3,367 |
First Page
Posted 11/09/2008 05:05 am
