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#1 2011-01-10 13:58:06

Dan
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From: Melbourne
Registered: 2010-04-08
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Removing milk spots from coins & rounds

Hi Guys,

Just posted a quick video response on how to remove milk spots from coins if anyone is a fanatic about their maples smile

Cheers,
Dan

Last edited by Dan (2011-01-10 13:59:32)


"Insanity: doing the same thing over and over again and expecting different results." - Albert Einstein

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The following 2 users say thank you for this post: Auspm, Naphthalene Man

#2 2011-01-10 14:01:36

Bullion Baron
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Re: Removing milk spots from coins & rounds

Will give this a try! Thanks

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#3 2011-01-10 15:27:17

alexisio
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From: (Wide Bay) Fraser Coast Qld
Registered: 2009-11-13
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Re: Removing milk spots from coins & rounds

Too easy cheers

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#4 2011-01-10 15:30:52

Auspm
Banned

Re: Removing milk spots from coins & rounds

Ingenuity 1, Milkspots 0.

Fantastic work mate!

#5 2011-01-10 17:21:16

errol43
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From: Bundaberg
Registered: 2010-04-14
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Re: Removing milk spots from coins & rounds

Dan Whats the price of the wipes?

Regards Errol43

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#6 2011-01-10 17:22:15

Dan
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Re: Removing milk spots from coins & rounds

errol43 wrote:

Dan Whats the price of the wipes?

Regards Errol43


Sorry Errol, what wipes do you mean?

Last edited by Dan (2011-01-10 17:28:50)


"Insanity: doing the same thing over and over again and expecting different results." - Albert Einstein

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#7 2011-01-10 17:30:16

JulieW
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Posts: 6,140

Re: Removing milk spots from coins & rounds

what is the milk spot caused by? Any of the metallurgists here know?

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#8 2011-01-10 17:34:35

rbaggio
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From: Australia
Registered: 2010-08-05
Posts: 4,372

Re: Removing milk spots from coins & rounds

JulieW wrote:

what is the milk spot caused by? Any of the metallurgists here know?

Drutter's latest youtube vid theorises that detergent used during the minting process is the cause.

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#9 2011-01-10 17:36:37

Boyou
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From: Ipswich
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Re: Removing milk spots from coins & rounds

It is caused by a rare form of Maple Leaf blight spot.

I hit mine with carabaryl and pyrethrum... waiting to see if the leaves drop off smile

Good work with the eraser ,Dan!


If you cast your bread upon the water.....what is the worst you will get back? Soggy bread?

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#10 2011-01-10 17:56:25

Dan
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Re: Removing milk spots from coins & rounds

rbaggio wrote:
JulieW wrote:

what is the milk spot caused by? Any of the metallurgists here know?

Drutter's latest youtube vid theorises that detergent used during the minting process is the cause.


Yeah, i think it has something to do with moisture & detergent.. i cleaned some at one stage and I made it worse.


"Insanity: doing the same thing over and over again and expecting different results." - Albert Einstein

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#11 2011-01-10 18:25:10

Bullion Baron
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Re: Removing milk spots from coins & rounds

I gave it a crack and ended up with some permanent marks on the coin where I used the eraser (perhaps tiny scratches from the rubbing?), although they do look a lot better.

Last edited by Bullion Baron (2011-01-10 18:25:34)

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#12 2011-01-10 18:26:47

Dan
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Re: Removing milk spots from coins & rounds

hobo-jo wrote:

I gave it a crack and ended up with some permanent marks on the coin where I used the eraser (perhaps tiny scratches from the rubbing?), although they do look a lot better.

Really? what colour is it? the harder they are the more abrasive they are, the softest is pink, then white, then red, then gray..  just use a normal white soft plastic eraser.


I even use an eraser to buff small scuffs out of gold.   Also don't work a frosted section too hard, you can buff the frosting out!

Last edited by Dan (2011-01-10 18:43:24)


"Insanity: doing the same thing over and over again and expecting different results." - Albert Einstein

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#13 2011-01-10 18:41:21

Bullion Baron
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Re: Removing milk spots from coins & rounds

Dan wrote:

Really? your not using one of the erasers with grit in it? the orange ones?

Nope, just a plain white one.
Didn't think I used that much force when rubbing, but perhaps a little too much...

61_1.jpg

Last edited by Bullion Baron (2011-01-10 18:42:13)

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#14 2011-01-10 18:46:48

Dan
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Re: Removing milk spots from coins & rounds

it might just be residue, sort of looks like smearing, maybe the type of rubber?.. anyway maybe try give it a wipe with some cloudy ammonia & detergent, or rinse with soapy water.

I guess you also have to be careful not to pick up any grit on the end of your eraser, something to be wary of if you have a real dirty coin you might just end up spreading the grit around and scratching the coin. something to be cautious of.

Last edited by Dan (2011-01-10 18:56:08)


"Insanity: doing the same thing over and over again and expecting different results." - Albert Einstein

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#15 2011-01-10 18:48:29

Bullion Baron
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Re: Removing milk spots from coins & rounds

Dan wrote:

it might just be residue, sort of looks like smearing, maybe the type of rubber?.. anyway maybe try give it a wipe with some cloudy ammonia & detergent, or rinse with soapy water.

Tried vinegar and bicarbsoda to clean and it didn't come off. Tried a good rub with a soft cloth and no change. Might try and find a different eraser to use.

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#16 2011-01-10 19:10:21

boneyard
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From: Deliverance Valley
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Re: Removing milk spots from coins & rounds

always pays to use a rubber.


Can you imagine what you would do if you you could do all that you can?  SUN TZU

Drusch asked terTelgte if he would like his case to go to trail, because he pleaded not guilty to both charges.
"I never plead," Tertelgte responded "Animals plead. Sounds like baaaaa, oink, oink."

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#17 2011-01-10 22:03:39

Auspm
Banned

Re: Removing milk spots from coins & rounds

boneyard wrote:

always pays to use a rubber.

That's what she said!

#18 2011-01-11 01:54:36

adrenalin
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Re: Removing milk spots from coins & rounds

Just tried it on some maples.

It definately reduces the milk spots!

How'd you come up with that idea Dan?

That's some lateral thinking!

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#19 2011-01-11 02:01:00

Dan
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Re: Removing milk spots from coins & rounds

i stubbled across it when i had to fix a small mark and a few scuffs on an old gold coin.. don't know what made me think of it, i was probably hunting though my draws and it looked like a better tool then the scissors.


"Insanity: doing the same thing over and over again and expecting different results." - Albert Einstein

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#20 2011-01-11 11:19:06

systematic
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Re: Removing milk spots from coins & rounds

cloudy ammonia has cleaned up some milk spots on my coins


if everyone is thinking the same, we aren't thinking very much ...

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#21 2011-01-11 11:22:19

Dan
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Re: Removing milk spots from coins & rounds

Left some coins in Cloudy Ammonia overnight, didn't remove them on my coins.. thought it would.


"Insanity: doing the same thing over and over again and expecting different results." - Albert Einstein

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#22 2011-01-11 12:11:21

Dan
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Re: Removing milk spots from coins & rounds

Ok, i've done some testing and I am now pretty positive that any marks left on coins are because the eraser is picking up dirt off the surface of the coin and you then rub it all over the surface. If you use a good quality soft eraser, keep checking the end make sure you don't have any dirt and no black bits on the end of your eraser you shouldn't have any issues.

If anyone wants to confirm this that would be great..

hobo, if you are willing.. with a nice clean soft eraser try working that coin again, you might find it cleans up.


"Insanity: doing the same thing over and over again and expecting different results." - Albert Einstein

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#23 2011-01-11 13:34:01

systematic
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From: melbourne
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Re: Removing milk spots from coins & rounds

i use the cloudy ammonia on a cotton bud


if everyone is thinking the same, we aren't thinking very much ...

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#24 2011-01-11 13:36:07

Dan
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Re: Removing milk spots from coins & rounds

mpowerin wrote:

i use the cloudy ammonia on a cotton bud

Adding a small amount of dish washing liquid (a detergent) will give the cloudy ammonia a power boost.


"Insanity: doing the same thing over and over again and expecting different results." - Albert Einstein

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#25 2011-01-11 13:37:24

Bullion Baron
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Re: Removing milk spots from coins & rounds

Dan wrote:

Ok, i've done some testing and I am now pretty positive that any marks left on coins are because the eraser is picking up dirt off the surface of the coin and you then rub it all over the surface. If you use a good quality soft eraser, keep checking the end make sure you don't have any dirt and no black bits on the end of your eraser you shouldn't have any issues.

If anyone wants to confirm this that would be great..

hobo, if you are willing.. with a nice clean soft eraser try working that coin again, you might find it cleans up.

Have bought a couple of different eraser types today, will try some experimenting tonight smile

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