What Are Your Thoughts On Using Ez-Est On Cupro-Nickel Proofs? - Page 2

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Author	Replies: 28 / Views: 1,394	Page: of 2

Dearborn Moderator United States 72105 Posts	Posted 12/19/2024 4:12 pm thanks all - I'll be on the search for low quality Cu-Ni coins to use as a 'sacrificial lamb' first. Collecting since 1972. Learning from then on "Tell me and I forget. Teach me and I remember. Involve me and I learn." - Benjamin Franklin 7070 type set coin count: 47/76 Uncirculated American Silver Eagles My American Silver Eagle Proof Collection Innovation Dollars Eisenhower-Dollars Kennedy-Half Dollars Washington-Quarters Roosevelt-Dimes Buffalo-Nickels Jefferson-Nickels Lincoln-Cents Report this Post to the Staff
jbuck Moderator United States 164276 Posts	Posted 12/19/2024 4:25 pm Quote: I'll be on the search for low quality Cu-Ni coins to use as a 'sacrificial lamb' first. Coin Collector Since 1978 My Avatar My Old Avatar My 7070 My Eisenhower Dollars CCF Members on eBay CCF eBay Search Engine Report this Post to the Staff
NumisEd Pillar of the Community United States 4541 Posts	Posted 12/19/2024 8:06 pm Quote: The MSDS lists sulfuric acid: 1-5% and thiourea: 3-7%. Absolutely do NOT use this CORROSIVE concoction! Report this Post to the Staff
Sap Moderator Australia 16341 Posts	Posted 12/19/2024 8:57 pm Quote: thanks all - I'll be on the search for low quality Cu-Ni coins to use as a 'sacrificial lamb' first. Or just grab some surplus US nickels from pocket change - they're made of the same alloy. I would concur that e-Z-est ought not to be used on base-metal coins. The sulfuric acid will simply eat away and pit everything base-metal. Sufuric acid/thiourea mixture is intended for tarnish removal of silver. I'm not entirely sure that anything will have a good chance of working; it depends on what exactly has caused the hazing. If whatever-it-is has etched into the metal, then the damage is done and nothing is likely to actually make an improvement. Can't say I've tried soapy ammonia, though. 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
Hondo Boguss Bedrock of the Community United States 18710 Posts	Posted 12/19/2024 10:23 pm Sudsy ammonia: "can also be made at home by adding a couple of tablespoons of liquid dish soap to a half gallon container of ammonia". And a half gallon container of ammonia is exactly what I picked up earlier at Dollar Tree for $1.25. Inordinately fascinated by bits of metal with strange markings and figures Report this Post to the Staff
Dearborn Moderator United States 72105 Posts	Posted 12/20/2024 07:20 am thanks Hondo - I'll mix up some of that - I'm pretty sure that Dawn dish soap has no bleach in it. (they us it on wildlife after all) Quote: Or just grab some surplus US nickels from pocket change - they're made of the same alloy. That was my plan - I have tons of unrolled (and unsearched) nickels. I'll use them (after a quick search for DDO / DDR and other stuff first, of course) Collecting since 1972. Learning from then on "Tell me and I forget. Teach me and I remember. Involve me and I learn." - Benjamin Franklin 7070 type set coin count: 47/76 Uncirculated American Silver Eagles My American Silver Eagle Proof Collection Innovation Dollars Eisenhower-Dollars Kennedy-Half Dollars Washington-Quarters Roosevelt-Dimes Buffalo-Nickels Jefferson-Nickels Lincoln-Cents Report this Post to the Staff
Hondo Boguss Bedrock of the Community United States 18710 Posts	Posted 12/20/2024 11:07 am I mixed up a small batch of sudsy ammonia - about 100 mls of Dollar Tree ammonia plus 1 drop Dawn. I soaked and swirled a British Virgin Islands 10 Cents 1975 in it for about 30 seconds but there was minimal effect. I'll try a longer soak later. edit: the color difference is probably due to lighting. British Virgin Islands 10 Cents 1975 Before ammonia British Virgin Islands 10 Cents 1975 Post ammonia Inordinately fascinated by bits of metal with strange markings and figures Edited by Hondo Boguss 12/20/2024 11:08 am Report this Post to the Staff
Greasy Fingers Pillar of the Community United States 6124 Posts	Posted 12/20/2024 9:23 pm Dare I say...looks more pronounced now. Report this Post to the Staff
Hondo Boguss Bedrock of the Community United States 18710 Posts	Posted 12/20/2024 10:04 pm That may be an artifact of lighting. The fogginess has not been affected much. Inordinately fascinated by bits of metal with strange markings and figures Report this Post to the Staff
jbuck Moderator United States 164276 Posts	Posted 12/22/2024 9:09 pm Does not seem worth the effort, but still a good experiment. Coin Collector Since 1978 My Avatar My Old Avatar My 7070 My Eisenhower Dollars CCF Members on eBay CCF eBay Search Engine Report this Post to the Staff
NumisEd Pillar of the Community United States 4541 Posts	Posted 12/22/2024 9:38 pm The coin looks good as it is. Not sure why the need for experimentation. Report this Post to the Staff
Hondo Boguss Bedrock of the Community United States 18710 Posts	Posted 12/22/2024 10:00 pm Quote: Not sure why the need for experimentation. This coin isn't especially foggy, but was an expendable CuNi proof. I have others that are quite foggy, to the point of being very unattractive. It would be nice if they could be treated. Inordinately fascinated by bits of metal with strange markings and figures Report this Post to the Staff
jbuck Moderator United States 164276 Posts	Posted 12/22/2024 10:26 pm Quote: This coin isn't especially foggy, but was an expendable CuNi proof. I have others that are quite foggy, to the point of being very unattractive. It would be nice if they could be treated. Coin Collector Since 1978 My Avatar My Old Avatar My 7070 My Eisenhower Dollars CCF Members on eBay CCF eBay Search Engine Report this Post to the Staff
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