| Author |
 Replies: 34 / Views: 3,557 |
Page 3 of 3
|
|
|
|
Valued Member
Singapore
104 Posts |
^yup, I see hairlines... even through a camera lens :)
i see stuffs I've never realized were bad. but at least now I can make improvements.
thanks guys! no to cleaning, then... i'll have to thow away my metal cleaner, too (or just give it to someone who wants to shine a belt buckle) hehehe
|
|
Pillar of the Community
Spain
1361 Posts |
kurts toothpaste without toothbrush only using your fingers to rub and eraser (rubber) leaves hairline scraches?
Edited by manila galleon trade
11/21/2008 8:04 pm
|
|
Valued Member
Singapore
104 Posts |
^i haven't tried toothpaste...i used to clean my coins with metal cleaners :(
thought I was doing them good
|
|
Bedrock of the Community
United States
12437 Posts |
Quote:
toothpaste without toothbrush only using your fingers to rub and eraser (rubber) leaves hairline scratches?
Both toothpaste and pencil erasers contain abrasives. Neither one of them should ever come anywhere near the surface of a coin  |
|
Valued Member
Singapore
104 Posts |
|
|
Bedrock of the Community
United States
19960 Posts |
Quote:
Your not alone in that way of thinking. Probably millions of coin collectors clean coins. Way, way back if you collected coins and showed them to people, one thing you would usually hear is "why don't you clean those things, they would look so much better". And we did. This is why so many coins have been cleaned. An old Whitamn Folder with a lot of nice shinny pennies was something to show off back then.
And today probably most kids in any chem class just has to see what acids do to coins. I wonder just how many people have spit on a coin to make it cleaner? Why what else is there to do with dirty coins?
Indeed carl. This way of thinking also reduced the number of numismatically acceptable coins too. I'll share my tip: When I want "de-grime" an otherwise nearly worthless coin, I simply use a little dish soap on it and rub between my fingers under running warm water. Simple, effective and doesn't scratch the coin. However, the surface under the grime usually will leave spots. NEVER DO THIS TO A VALUABLE COIN. I've done it to Lincoln's just so I can make out the date. I'd hate to toss a 1909S VDB in the junk pile while searching wheats. LOL Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
|
|
Pillar of the Community
Spain
1361 Posts |
Quote:
toothpaste without toothbrush only using your fingers to rub and eraser (rubber) leaves hairline scratches?
Both toothpaste and pencil erasers contain abrasives. Neither one of them should ever come anywhere near the surface of a coin Does this mean everytime we brush our teeth we distroy it by using toothpaste? If it can produce hairlines scraches on metal what more our tooth enamel? rubber also produces scraches on metal? I'll never use rubber again  Edited by manila galleon trade
11/23/2008 05:43 am
|
|
Pillar of the Community
Spain
1361 Posts |
I better not brush my teeth everyday  |
|
Valued Member
Singapore
104 Posts |
|
|
Bedrock of the Community
United States
20753 Posts |
Quote:
I'll share my tip: When I want "de-grime" an otherwise nearly worthless coin, I simply use a little dish soap on it and rub between my fingers under running warm water. Simple, effective and doesn't scratch the coin. However, the surface under the grime usually will leave spots.
The problem here is the same as with toothpaste or anything that is a solution of products. Seldom is it possible to find any dish soap with the same chemical formulae. Toothpaste even more so. The chemical composition of such products is varied massively as well as the type of ingrediants. And although many products list some or all of the substances included, practically none reveal the percentages. Such information is usually proprietary due to industrial formulae theft is a constant problem. The reason I mention this is an attempt to clean a coin with dish soap or toothpaste by one person may well have consideral different effects by someone else. One tooth paste or dish soap may contain substances that are actually dangerous to coins. Others may have no effect at all. Be carefull out there. |
|
Rest in Peace
United States
9104 Posts |
Quote:
toothpaste? If it can produce hairlines scraches on metal what more our tooth enamel? Why do you think they sell enamel renewing mouthwash? |
|
Pillar of the Community
United Kingdom
1077 Posts |
For gullible people that believe it works!
|
|
Valued Member
United States
447 Posts |
Where can I buy Reagent grade Acetone?
Is 100% Acetone the same thing? I see they sell that at Kroger.
|
|
Valued Member
United States
199 Posts |
I have cleaned some low value silver coins with #1 diamond paste.But I have about 20 years experience polishing molds to optical finishes.I wouldn't recommend a novice to try it.It won't leave hairline scratches as long as the brushes are new and clean.One speck of dirt can ruin a project.....
Cheers,Brewzz
|
|
Bedrock of the Community
United States
20753 Posts |
Quote:
Where can I buy Reagent grade Acetone?
Is 100% Acetone the same thing? I see they sell that at Kroger.
Not really necessary. Of course if you wanted to you could look up chemical supply houses. The primary thing with Acetone is to just check it out for purity. Simple. Take a glass dish, cleaned with distilled water, pour some Acetone on it, allow to evaporate in a well ventilated area. If there is no residue, it is as pure as you can get. In many instances the Acetone from a paint department in a store may well have been there for years. Possibly some of the insides of the can, if in a can, has been dissolved into the Acetone. If so, there will be a white substance on the dish. |
|
Page 3 of 3
|
Replies: 34 / Views: 3,557 |
Page 3 of 3
|
First Page
Previous Page
Posted 11/21/2008 8:02 pm
