- Thread starter fizzy
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slim_boy_fat
Member
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I think @The_Yellow_Ardvark might be able to help, he's done lots of that process.
grim_d
Unlikeable idiot.
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It's the oxidation from the process. I generally just rinse in clean water and wipe until it stops coming off and leave as is, I'm usually going to cold blue things anyway.
If it really bothers you it does polish off with scotchbrite.
If it really bothers you it does polish off with scotchbrite.
The_Yellow_Ardvark
https://www.death-clock.org/
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If is does not come of with pressure washing, power wire wool, hand wire, wire brush then the surface has oxided.
This is perfectly normal and is harmless.
If you think that a lot of over the counter rust converters change red oxide to black oxide and say leave it, it is ok.
I like to dry the surface off with a hot air gun, then with wax and oil apply and buff for that "Antique" look on older metal.
If not key up with your normal application , paint and enjoy.
I use both hot and cold water, hot speeds parts up, but time will do the same job when cold.
I advised to give the object a good washing in warm water, or a pressure washer and dry well. The water will seep into any nook and cranny.
I use 1tbls spoon of citric acid powdered to 1lt of water as a starter, but will add more until I see bubbles forming.
If you can suspend the item so it doesn't rest o the bottom of the container.
This is perfectly normal and is harmless.
If you think that a lot of over the counter rust converters change red oxide to black oxide and say leave it, it is ok.
I like to dry the surface off with a hot air gun, then with wax and oil apply and buff for that "Antique" look on older metal.
If not key up with your normal application , paint and enjoy.
I use both hot and cold water, hot speeds parts up, but time will do the same job when cold.
I advised to give the object a good washing in warm water, or a pressure washer and dry well. The water will seep into any nook and cranny.
I use 1tbls spoon of citric acid powdered to 1lt of water as a starter, but will add more until I see bubbles forming.
If you can suspend the item so it doesn't rest o the bottom of the container.
Last edited:
Gragson
Member
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Find after citric / phosphoric / whatever, that when dried the finish is quite matt flat looking. What oils / waxes do people recommend?
The_Yellow_Ardvark
https://www.death-clock.org/
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- Going Away.
BriWax in a tin.
Block of Bee's wax dissolved in white Spirit.
Bee's wax, linseed oil and a few drops of lavender oil. warmed until it forms a paste.
Apply and buff.
The_Yellow_Ardvark
https://www.death-clock.org/
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When buffed up on a item inside the house it gives off a nice smell.LAVENDER OIL?
In the garden it is meant to attract bee's, according to Monty Don.
Hopefuldave
Intergalactic pot-mender
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BUT - no silicones in the wax, it makes the part unpaintable, along with anything nearby (at best, fisheyes, at worst just falls off) and it's nearly impossible to get it all off later - AldiLidl furniture paste wax is pretty good, all natural waxes, I use it to keep rust off the lathe and mill where the iron's exposed and it's got a good reputation for saw tables etc. - helps if you can warm the metal with a hot air gun to melt the wax into the pores.
Dave H. (the other one)
Hopefuldave
Intergalactic pot-mender
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- 2,545
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- The Shed of Danger, surrey, England
I have some concentrated hydrochloric that looks perfect
Will wear my gas mask and dilute down though fumes are very nasty!
And do it outdoors, a long way from anything/anyone you like... the vapour given off will rust anything near it!
Dave H. (the other one)
Country Joe
Argoshield Dark
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I cleaned up quite a few horse-shoes last week.
When I collected them, @hotponyshoes suggested I pressure wash them first.
Well, I thought I’d just get covered in manure-rich water, so I didn’t - but what a bloody mistake, that was - and I’ll listen to the fellow next time!
I dunno why I decided I had to start when I did, but I sat them outside in a sun-trap, in a couple of buckets of boiling hot citric acid.
About an hour later, I started to get impatient, so thought I’d squat on the ground (in the 27C heat), and scrub all those little grooves on the bottom of the shoes with a toothbrush!
Another mistake! All of the filthy grit, manure, straw, mud & gravel was just filling the mix with filth - and (to my mind) must have been reducing the effect.
My production rate was very poor, too - I only did about 35 in about 4.5 hours, and boiled almost to death, scrubbing away, elbow deep in the filthy, acidic mixture - in the sun!
Having said that - the above time-frame did include giving them a rinse in boiling water, and then drying them with the compressed air blow gun.
They had a slight haze of orange on them until I’d scrubbed & hot-rinsed them, but after drying, they were just slightly darkened.
This is how they looked before:-
This is afterwards:-
These few have had a quick “wire-brush on a drill” treatment.
Obviously, next time I’ll pressure wash them first!
All the Best,
CJ
When I collected them, @hotponyshoes suggested I pressure wash them first.
Well, I thought I’d just get covered in manure-rich water, so I didn’t - but what a bloody mistake, that was - and I’ll listen to the fellow next time!
I dunno why I decided I had to start when I did, but I sat them outside in a sun-trap, in a couple of buckets of boiling hot citric acid.
About an hour later, I started to get impatient, so thought I’d squat on the ground (in the 27C heat), and scrub all those little grooves on the bottom of the shoes with a toothbrush!
Another mistake! All of the filthy grit, manure, straw, mud & gravel was just filling the mix with filth - and (to my mind) must have been reducing the effect.
My production rate was very poor, too - I only did about 35 in about 4.5 hours, and boiled almost to death, scrubbing away, elbow deep in the filthy, acidic mixture - in the sun!
Having said that - the above time-frame did include giving them a rinse in boiling water, and then drying them with the compressed air blow gun.
They had a slight haze of orange on them until I’d scrubbed & hot-rinsed them, but after drying, they were just slightly darkened.
This is how they looked before:-
This is afterwards:-
These few have had a quick “wire-brush on a drill” treatment.
Obviously, next time I’ll pressure wash them first!
All the Best,
CJ
Shox Dr
Chief Engineer to Carlos Fandango
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angellonewolf
Member
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- bristol england
^^^ less elbow grease needed the ctric gets all of it 99 percent gone then quick going over to get rid of the stuck bits
