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 Replies: 38 / Views: 3,445 |
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Bedrock of the Community
 United States
10472 Posts |
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Hey Marve, have you ever tried Goo Gone on a slab? I sometimes get slabs that have had stickers on them and it's tough to get that goo off. Yes - BUT unfortunately it ruins the plastic slab - makes it cloudy - don't do that! |
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Bedrock of the Community
United States
24886 Posts |
Thanks, Marve! I'll stick to Windex.
Inordinately fascinated by bits of metal with strange markings and figures
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Moderator
United States
94666 Posts |
Interesting topic, I look forward to seeing a resolution here.
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Moderator
United States
187544 Posts |
I have only used rubbing alcohol and a cotton swab to remove sticker goo from my slabs. Takes patience, but I am afraid to use anything else that can damage the plastic. As for the quarter, my efforts begin and end with Bad Thad's polarity ladder. Anything else would be an experiment on an expendable coin. |
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Pillar of the Community
  United States
6451 Posts |
Well, I let it soak overnight in 70% isopropyl alcohol. The stickiness is gone. The obverse haze didn't diminish much, but I can no longer scratch it anywhere with a fingernail. The reverse actually picked up some tan toning. I think that might have been hiding under the sticky stuff.
Coin was rinsed, and is currently soaking in pure acetone. I will take photos again either tonight or tomorrow.
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Moderator
United States
187544 Posts |
Quote:
Well, I let it soak overnight in 70% isopropyl alcohol. The stickiness is gone.  Quote:
The obverse haze didn't diminish much, but I can no longer scratch it anywhere with a fingernail. The reverse actually picked up some tan toning. I think that might have been hiding under the sticky stuff. Sounds like a win to me.  Quote:
Coin was rinsed, and is currently soaking in pure acetone. I will take photos again either tonight or tomorrow.  |
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Valued Member
Australia
100 Posts |
I have used automotive paint thinners with good results. It removes sticky residue such as PVC damage, glue, lumps of tacky grime, melted candy etc.
Thinners has some oil content that may have a restorative effect.
Paint thinners come in different grades and types based on the paint they are designed to thin and their drying characteristics, including general-purpose/multi-purpose thinners, acrylic thinners, enamel thinners, and rapid thinners.
I wander what NGC used for their ship wreck salvage coins.
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Pillar of the Community
United States
6451 Posts |
My buddy runs a painting business, so maybe I can eventually add some xylene to the conservation arsenal. I don't really want to purchase an industrial sized can of it.
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Moderator
United States
187544 Posts |
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My buddy runs a painting business, so maybe I can eventually add some xylene to the conservation arsenal. I don't really want to purchase an industrial sized can of it. It would be nice to do some testing before a bigger financial commitment. |
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Bedrock of the Community
United States
24886 Posts |
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I don't really want to purchase an industrial sized can of it. The big box stores have gallon cans of it, but that would be a lifetime supply. If you do get some from your buddy, be sure to use it outside - it's kinda stinky. Inordinately fascinated by bits of metal with strange markings and figures
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Pillar of the Community
United States
6451 Posts |
Before:  After:  Before:  After:  |
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Moderator
United States
187544 Posts |
Looks better now.  |
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Bedrock of the Community
United States
24886 Posts |
Brandmeister, what were your treatments?
Inordinately fascinated by bits of metal with strange markings and figures
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Pillar of the Community
United States
6451 Posts |
Treatment #1: boiling water in a glass jar for 30 minutes. Net result: not much noticeable. Still able to scratch gunk with toothpick and fingernail, still sticky.
Treatment #2: pure acetone for 3-4 hours. Net result: not much noticeable.
Treatment #3: overnight soak in 70% isopropyl alcohol (12-16 hours). Net result: visible reduction in haze, especially on devices. Silver quarter no longer sticky to the touch. No longer able to push fingernail or toothpick into surface toning (although if I scratched hard with the toothpick, it might scuff it).
Treatment #4: pure acetone for an hour or two. Net result: not much noticeable. I just did that to dry out any water content from the 70% alcohol.
I would say that the overnight alcohol soak is what produced the improvement.
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Moderator
United States
187544 Posts |
Thank you for the breakdown. |
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Replies: 38 / Views: 3,445 |
First Page
Posted 08/21/2025 11:18 pm
