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#1

Ag Man
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Joined: 06 January 2013
Posts: 1,066
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19 August 2013 10:40 am

After reading a post https://www.prospectingaustralia.com.au … hp?id=2357 about a badly rusted oven door which was found by Paul, & it was suggested to try electrolysis to clean off the rust - I thought to give it a go.

I've got some old horse shoes to try it on. One badly rusted & one not so badly.

Gone with the info given on the YouTube clips in the above post.

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In my plastic bucket I've put some warm water mixed with Carb Soda(about a cup full?)

2 tent pegs as my anodes that I've jumped together & hooked up to the positive of my 12V battery charger

The horse shoes I've hung off a bit of square bar with wire, which I've conected to the negative of my battery charger.

They recon to leave it for a couple of hours so I'll report back then...

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Okay, I couldn't wait so 10 minutes later I have a look & the metal parts in the solution are fizzing away like crazy!

I'm very keen to see the results after a few hours  8)

I'm impressed to see all the rust scale under the shoes!

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GS10 Highbanker, McKirk sluice, Garret pans, yabby pump etc., Whites Coinmaster 6000D, Minelab Gold Monster

3 users like this post: Diggerdude, Nugget, mbasko

#2

Nugget
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Joined: 27 November 2012
Posts: 6,041
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19 August 2013 03:07 pm

Very interesting AG, I'm looking forward to the final result.

Do you have any corroded Pennies? I've got a bunch if you want to try it out on copper coins.

#3

Ag Man
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Joined: 06 January 2013
Posts: 1,066
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19 August 2013 03:32 pm

Say it's been 5hrs. The horse shoe that was the rustiest has had the most improvement.

I'm keen to try it out on some other stuff now.

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On one of the YouTube videos the dude says to leave it go overnight - will bung it in again...


GS10 Highbanker, McKirk sluice, Garret pans, yabby pump etc., Whites Coinmaster 6000D, Minelab Gold Monster

#4

Ag Man
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Joined: 06 January 2013
Posts: 1,066
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19 August 2013 03:40 pm

Nugget wrote:

Very interesting AG, I'm looking forward to the final result.

Do you have any corroded Pennies? I've got a bunch if you want to try it out on copper coins.

On one of the YouTube videos it says something about not letting copper get in contact. Not sure what happens


GS10 Highbanker, McKirk sluice, Garret pans, yabby pump etc., Whites Coinmaster 6000D, Minelab Gold Monster

#5

Diggerdude
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Joined: 23 March 2013
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19 August 2013 04:20 pm

You will be able to do copper the same way, you may just need a different anode.  I was learning about this in chemistry last term when doing redox reactions, you need to use metals of different electronegativity.  I have a formula here somewhere which says the amount of chemical change that occurs in electrolysis is directly proportional to the charge.  Note different metals have different charges for example Ni has a charge of -0.25v and Cu -0.74v therefore when used together the Cu will oxidize as its more negative.  I will have a look through my notes and write a method for the copper coins.

DD

1 user likes this post: mbasko

#6

Balx
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19 August 2013 04:26 pm

Thats amazing. My golf Game is a little rusty should I try this in the bath?

#7

TenOunce Tone
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From: Cairns, QLD
Joined: 18 March 2013
Posts: 1,382
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19 August 2013 06:01 pm

It will be interesting to see how the hooks holding the horse shoes come up.


One man, One pan, One goal!

#8

Paul
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Joined: 15 August 2013
Posts: 69
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19 August 2013 06:54 pm

defiently made a difference. ill try my oven door on the weekend. for old coins i guess you could sit them in a metal basket like a deep fryer basket to "cook" them.


Current Detectors: Bounty Hunter Tracker IV, Garrett Ace 250, Teknetics G2

#9

Paul
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Joined: 15 August 2013
Posts: 69
Gone Walkabout
19 August 2013 07:00 pm

what power supply are you using? just a battery charger? what setting was it on?


Current Detectors: Bounty Hunter Tracker IV, Garrett Ace 250, Teknetics G2

#10

Ag Man
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Joined: 06 January 2013
Posts: 1,066
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19 August 2013 07:34 pm

Just a 12V car battery charger. 4amp.

No adjustments or dial/meter on it.


GS10 Highbanker, McKirk sluice, Garret pans, yabby pump etc., Whites Coinmaster 6000D, Minelab Gold Monster

#11

HeadsUp
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From: Sydney, NSW
Joined: 17 April 2013
Posts: 3,012
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19 August 2013 11:52 pm

Balx wrote:

Thats amazing. My golf Game is a little rusty should I try this in the bath?

Good idea !

As its a family' show here I won't ask what you're going to clip the wires on to. yikes

Wonder if it could fix the arthritis in my knees  ?


On a mission to rescue as many gold nuggets as i can before those poor souls get washed out to sea . GPX5000 smilemaker , self built highbanker and enthusiastic shovel

#12

kawman
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From: Taree, NSW
Joined: 11 July 2013
Posts: 938
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20 August 2013 08:34 am

On my bike resto,s I have been using molasses for years to remove rust..  The electric method works but takes some of the parent metal with it..  To use molasses... mix molasses say 1 ltr to three or 5 liters of water..  put in plastic drum down the back for a few weeks to let it ferment and then drop in your rusty parts.. they will come out in a few days completely free of rust...keep the mix to use later on..  Can do car panels ect as well.. just remove anything not made of steel as it will destroy it..  I use a hole dug in the ground lined with plastic for larger items.. fill it  up and drop the panel in..  MUST LET IT FERMENT TO MAKE THE ACID THAT DOES THE WORK>> wink

1 user likes this post: Ag Man

#13

Ag Man
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Joined: 06 January 2013
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20 August 2013 08:58 am

Thanks Kawman.
I did see that method too & the parts came out looking great!!!

How do you go about starting the fermentation? Make up the mix & cover it I guess. Does it need to be warm to ferment?

One guy on YouTube had a wheely bin as his molasses rust bath...


GS10 Highbanker, McKirk sluice, Garret pans, yabby pump etc., Whites Coinmaster 6000D, Minelab Gold Monster

#14

kawman
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From: Taree, NSW
Joined: 11 July 2013
Posts: 938
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20 August 2013 11:32 am

Just mix and wait..  Very low tech and works very well.. It will remove all the rust even half in thick..

Ag Man wrote:

Thanks Kawman.
I did see that method too & the parts came out looking great!!!

How do you go about starting the fermentation? Make up the mix & cover it I guess. Does it need to be warm to ferment?

One guy on YouTube had a wheely bin as his molasses rust bath...

1 user likes this post: Ag Man

#15

G0lddigg@
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From: Redcliffe, QLD
Joined: 03 April 2013
Posts: 5,050
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26 September 2013 10:29 am

Awesome project! My old man will love this he's got keys, shoes etc that he has let go great for a test


Sluicing life is the life for me
Engineering Gold Sluices and Highbankers

#16

Marked
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Joined: 29 August 2013
Posts: 338
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26 September 2013 11:11 pm

Need to be careful with copper as it can be much more reactive in acid solutions, and you may destroy your piece if not careful.

I have had some success using oxalic acid (quite a mild acid) solutions for brass and copper - I have purchased oxalic acid crystals as timber rejuvenator from hardware stores. It can also takes rust stains out of timber.

For rusty steel, dunking in a 6:1 water and hydrochloric acid (spirits of salts) mix will loosen the rust - it takes a long time for this solution to overly affect the un-oxidized portion of the iron/steel.

As for electrolytic cleaning; ideal results may be obtained by using different electrolytes for different materials...and being able to control voltages can help target removal of specific compounds without harming the parent piece.


"The Sun's not Yellow, It's Chicken." Bob Dylan - Tombstone Blues (Highway 61 Revisited{1965})

#17

Nightjar
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From: Home-Waikiki, Prospect-Leonora
Joined: 26 September 2013
Posts: 2,499
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17 October 2013 08:21 pm

Ag man,
You are putting yourself in a very explosive environment?
ie: Producing Hydrogen gas using this method?
Don't collect the gas coming off both wires into the same container, since the mixture could burn explosively upon ignition.

Be careful.

Last edited by Nightjar (17 October 2013 08:26 pm)


The only place success comes before work is in the dictionary.
Happy Hunting, Nightjar.

#18

Ag Man
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Joined: 06 January 2013
Posts: 1,066
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17 October 2013 08:44 pm

In the right conditions it's very explosive. But the minute amount of hydrogen this would produce would be so little...
Anyhow, I've only ever had it in the shed which is huge & very well ventilated, always turn off the power before connecting or disconnecting.

I like the molasses method & will try that next


GS10 Highbanker, McKirk sluice, Garret pans, yabby pump etc., Whites Coinmaster 6000D, Minelab Gold Monster

#19

BrisJoe
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From: Moranbah, QLD
Joined: 22 June 2013
Posts: 632
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17 October 2013 09:32 pm

Good old method I used to use for cleaning up coins was to let them soak in a glass of coke.
Makes you wonder just how bad that stuff is for your teeth after you see it strip a coin clean, or destroy a tooth in 3 days.
Going on 12years since I gave up coke lol


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