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Pillar of the Community
  United States
6548 Posts |
Errers wrote: I looked at that entry. It does bear some similarity to this surface. But the rust spots seemed very shallow compared to this nickel. Also, the ERef example didn't seem confined to a particular area, the whole die face seemed rusted. I also considered the possibility that the die cracked along the edges of the window, but the chips couldn't escape immediately. So the original chips got smashed back into the die surface a bunch of times before finally falling out of the machine. |
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Pillar of the Community
United States
6548 Posts |
Quote:
I couldn't tell you how may people have said that.... until it comes off.  Just for you, good sir. And for Science!  |
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Pillar of the Community
Canada
6244 Posts |
We say all times acetone, acetone. But if for example it is crazy glue base on cyan hydrate of potassium which it is nonreactive to acetone?
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Pillar of the Community
 United States
5785 Posts |
Die chips can occur from Die Deterioration, die cracks, or even debris from equipment failure. Without a recognizable shape to the die damage you will probably never know With that being said, is the area on the left side of Jeffersons lapel raised or incuse. It's hard to tell from the full coin image. If raised, maybe that's the culprit for the reverse die damage. Words of encouragement are one of the major food groups.
We need to consume them regularly to thrive and grow.
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Moderator
United States
189213 Posts |
Quote:
Just for you, good sir. And for Science!  Quote:
But if for example it is crazy glue base on cyan hydrate of potassium which it is nonreactive to acetone? Say what? Krazy Glue and other "super glues" are cyanoacrylates. They are most certainly affected by acetone. If not, I would have never been able to clean up the many messes I have made with it over my many years.  |
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Forum Dad
United States
24170 Posts |
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We say all times acetone, acetone. But if for example it is crazy glue base on cyan hydrate of potassium which it is nonreactive to acetone? I see this all the time here... won't work on super glue... won't work on epoxy.... ridiculous. I've done both with no issues. About 10 years ago I mixed up some JB Weld and smeared it on a quarter, let it dry 48 hours then soaked it overnight in acetone. Peeled right off. I fixed my 69 Dart 273 V8 cracked block with this stuff when I was 17 and put another 100K miles on it before I sold it. |
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Moderator
United States
189213 Posts |
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...JB Weld... I fixed my 69 Dart 273 V8 cracked block with this stuff when I was 17 and put another 100K miles on it before I sold it. Significant portions of my VW bug were held together by that most excellent product.  |
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Pillar of the Community
United States
7174 Posts |
Bobby, did the same thing to a 73 jeep tranny. Drove it for another 40,000.
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Pillar of the Community
Canada
6244 Posts |
I repair an Johnson 50 boat motor with liquid aluminum 20 years ago and the motor still go very well. was a glue use for plane base on cyan hydrate and not cyanoacrylates.. I try acetone to clean after the small spatulas (metallic) and do not work. For this I state the acetone do not work on all glue or other materials as boat epoxy, glass fiber.
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Moderator
United States
189213 Posts |
I am not sure what "cyan hydrate" is. Nothing I find includes "cyan hydrate" as a component. The closest is hydrogen cyanide, which can be used as part of the process to create some adhesives; however, acetone would be still able to break them down. Perhaps you needed a longer soak.  |
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Moderator
United States
97083 Posts |
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...JB Weld... I fixed my 69 Dart 273 V8 cracked block with this stuff when I was 17 and put another 100K miles on it before I sold it. I used to 'fix' a 357 Windsor engine block. It was cracked on top of the cylinder deck (where the heads bolt down to) right down into the water jacket. I filled the gap, hand milled it flat, reinstalled the heads (and the rest) and the engine ran great! |
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Pillar of the Community
Canada
6244 Posts |
@ Jbuck: I talk about:
Iron(2+) potassium cyanide hydrate (1:4:6:3)
Molecular Formula C6H6FeK4N6O3
Average mass 422.388 Da
Monoisotopic mass 421.839905 Da
ChemSpider ID141497
And not hydrogen cyanide CHN use for those low end glues as fast glue or craze glue.
Edited by silviosi
06/23/2023 6:41 pm
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Pillar of the Community
United States
6548 Posts |
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Pillar of the Community
Canada
6244 Posts |
Excellent result to show that 50 years old thinking do not fit anymore the narrative. I knows this from the begin. Been an 2022 coin I hope do not come out glossy, because this happened with the new alloy.
Edited by silviosi
06/23/2023 10:14 pm
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Pillar of the Community
United States
2563 Posts |
If it was my vote, I'm going with maybe a few small chips and a good bit of surface damage. Either way, an interesting example that is probably worth more of a learning example than anything else.
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Posted 06/23/2023 11:30 am
