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 Replies: 26 / Views: 2,461 |
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Bedrock of the Community
United States
20753 Posts |
The main thing is regardless of if the coin is a proof or anything else, just rinse with distilled water and blow dry after. Always remember to use clean glass for the Acetone holder and if possible a glass utensil to remove the coins. Never use plastics or metals for the container.
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Valued Member
 United States
128 Posts |
Have you ever niticed it leaving a gold tone on the coins?
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Rest in Peace
United States
9104 Posts |
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Pillar of the Community
United States
860 Posts |
With acetone,
(1) Check each new can by pouring some into a clean clear glass container like a glass vial or maybe a glass test tube from your local science teacher and let it evaporate ( not near any flame). There should be absolutely no residue left. The local college chem lab uses the Home depot stuff and none has ever been a problem.
(2) Don't reuse it. Some think they will save a few cents and pour the used acetone back in the container. NO! Any contaminants will be deposited back on your coins, possibly only visible at the time on the proofs, but all will have similar and problems later.
(3) Biokemist was right on above about proofs, but I also rinse the surface of them almost vertical with new acetone so I am sure there is no old residue before it flashes off.
(4) And as mentioned, be very careful of plastic containers and utensils. Some plastics are stable , but many are not. USE glass.
Stupid things not to do ( personal list only done once and never again)
Don't use around finished woodwork unless you want to redo it.
Don't use around Slabs, as I know for sure PCGS plastic will "melt" and you will have a ugly spot on the case.
Jim
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Bedrock of the Community
United States
20753 Posts |
Quote:
Have you ever niticed it leaving a gold tone on the coins?
Acetone could leave all types of tones, colors, spots on coins if left to completely evaporate. This is due to the contaminates that were absorbed from the coins or even substances on the containers that were used. Also, just because you recently purchased Acetone and it was in a metalic can from a paint store, it too may have already been contaminated. The insides of those cans were treated with a substance that is non absorbing by the Acetone. However, like all manufacturing processes there are errors made. If the inside is not completely coated, some of the metal of the can could have been absorbed in the Acetone which is why it should always be tested prior to the usage on a coin. For Acetone sold in a paint section of a store, such minor contaminates are perfectly acceptable since this is supposed to be used in painting, not for coins. Sort of like buying a rag in a auto store for treating a cut on your arm. |
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Bedrock of the Community
United States
12437 Posts |
Quote:
I also rinse the surface of them almost vertical with new acetone so I am sure there is no old residue before it flashes off.
Yes, this is very important and I forgot to mention it  Dunk and then rinse with fresh acetone. |
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Pillar of the Community
United States
2540 Posts |
as Carl mentioned, blow dry--
BUT: not with your mouth!
Small spots from spit may accumulate on the coin, and stain it.
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Pillar of the Community
United States
1267 Posts |
Very interesting thread...  Ben |
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Pillar of the Community
United States
2540 Posts |
Hi, Ben.
Good to see you here.
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Bedrock of the Community
United States
14454 Posts |
about a fingerprint, if it was recently done acetone may remove it but if the print has been there for a length of time and has already etched itself in the coin acetone will not do anything to remove the print but it may however stop it from getting worse
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Bedrock of the Community
United States
20753 Posts |
Quote:
as Carl mentioned, blow dry--
BUT: not with your mouth!
Small spots from spit may accumulate on the coin, and stain it.
Glad you said that. I just almost assumed people would not use their breath on a coin just dipped to dry it. And from some of the people I've come in contact with, their breath would probably do more damage than acid. As for finger prints on coins. Usually depends on the type of coin as well as how long it was there. At a coin show not long ago I purchased a 1995 Double Die Lincoln Cent in possibly MS-63 for practically nothing. The reason was there was a finger print right on the face. So with really nothing to loose I tried soaking it in Acetone for days. Then since that had no effect, I dumped it into a jar of jewlery cleaner from Walmart. Left it in for seveal hours. It came out as if it was just minted so I dipped it in the Acetone, rinsed with distilled water and blew it dry with a HAIR DRYER, not my mouth. It really looks great and not a bit of finger print left. |
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Replies: 26 / Views: 2,461 |
First Page
Posted 10/30/2008 6:41 pm
