Removing the Tarnish.........

[DrDave]

First of all, thanks to @James32 and @Scootermuppet for advice on removing the tarnish on a Maple that i received in a batch.

So i gave it a go, despite the word of warning from @LawrenceChard 🤓 , and i'm quite pleased with the result.

However i was interested to find out what was happening when the coin was in the solution, and, although i had an idea, i did a little Googling.

As i thought, it was an electrolytic process. What happens (i'm happy to corrected though) is that the bicarb and the foil turns the tarnish, which is a silver sulphide, back into silver (which i understand remains on the coin) and the releases the sulphide which attaches itself to the aluminium foil, becoming aluminium sulphide.

So my logic tells me that however long i leave to coin in the solution, the process won't continue if the tarnish has gone, and the coin won't loose any of its mass into the solution.

So i'll accept the challenge from Mr Chard, and will put a coin in a solution and weigh it each day for a week and refresh the solution. I'll start a new thread tomorrow and will update it every day if anybody is interested?

Its not that important in the grand scheme of things, but i get obsessed with things like this 🤓

 

[James32]

Looks alot better already and should improve each day..

Worst case scenario, you will have a 1/2 oz coin by end of August 😁

[Scootermuppet]

The chemistry is cool too - I put these two videos on the original cleaning thread I mentioned over on your other post... Listed here in the order the videos should be watched in...

 

 

[DrDave]

17 minutes ago, Scootermuppet said:

The chemistry is cool too - I put these two videos on the original cleaning thread I mentioned over on your other post... Listed here in the order the videos should be watched in...

 

 

Thanks

I'll take a look 

[LawrenceChard]

2 hours ago, DrDave said:

First of all, thanks to @James32 and @Scootermuppet for advice on removing the tarnish on a Maple that i received in a batch.

So i gave it a go, despite the word of warning from @LawrenceChard 🤓 , and i'm quite pleased with the result.

However i was interested to find out what was happening when the coin was in the solution, and, although i had an idea, i did a little Googling.

As i thought, it was an electrolytic process. What happens (i'm happy to corrected though) is that the bicarb and the foil turns the tarnish, which is a silver sulphide, back into silver (which i understand remains on the coin) and the releases the sulphide which attaches itself to the aluminium foil, becoming aluminium sulphide.

So my logic tells me that however long i leave to coin in the solution, the process won't continue if the tarnish has gone, and the coin won't loose any of its mass into the solution.

So i'll accept the challenge from Mr Chard, and will put a coin in a solution and weigh it each day for a week and refresh the solution. I'll start a new thread tomorrow and will update it every day if anybody is interested?

Its not that important in the grand scheme of things, but i get obsessed with things like this 🤓

 

That's great, you accepting the challenge.

You are probably correct in that there will not be much weight loss, if any, but it will be interesting to see what the surfaces of your test coin look like after days or weeks.

😎

Edited July 31, 2022 by LawrenceChard

[DrDave]

6 minutes ago, LawrenceChard said:

That's great, you accepting the challenge.

You are probably correct in that there will not be much weight loss, if any, but it will be interesting to see what the surfaces of your test coin after days or weeks.

😎

I've got a scratchy Maple. I'll take a clear shot tomorrow and then again in one week to see if the condition changes. 

[Fishface220]

Quite sad but I’m looking forward to seeing this daily! 

[AaaGee]

On 31/07/2022 at 13:21, DrDave said:

First of all, thanks to @James32 and @Scootermuppet for advice on removing the tarnish on a Maple that i received in a batch.

So i gave it a go, despite the word of warning from @LawrenceChard 🤓 , and i'm quite pleased with the result.

However i was interested to find out what was happening when the coin was in the solution, and, although i had an idea, i did a little Googling.

As i thought, it was an electrolytic process. What happens (i'm happy to corrected though) is that the bicarb and the foil turns the tarnish, which is a silver sulphide, back into silver (which i understand remains on the coin) and the releases the sulphide which attaches itself to the aluminium foil, becoming aluminium sulphide.

So my logic tells me that however long i leave to coin in the solution, the process won't continue if the tarnish has gone, and the coin won't loose any of its mass into the solution.

So i'll accept the challenge from Mr Chard, and will put a coin in a solution and weigh it each day for a week and refresh the solution. I'll start a new thread tomorrow and will update it every day if anybody is interested?

Its not that important in the grand scheme of things, but i get obsessed with things like this 🤓

 

Did you start a new thread?

Cant find it.

[DrDave]

8 minutes ago, AaaGee said:

Did you start a new thread?

Cant find it.

Just about to do it now! Should be live by 4pm......................