Grenade cleaning

[jhonni \]

Method of cleaning with oxalic acid.
If your model of grenade initially was painted and have rust now, you can washing it in oxalic acid. Oxalic acid not dissolve a paint, rust only.
This grenade arrived yesterday, is empty and inert and in colour.
That model was not ideal initially but it better now after washing.
Good luck!
Eugene.

 

[jhonni \]

notice:
- Washing a model with polymeric brush after every 40 min.

 

[Fragman]

Hi Eugene. Great work. Thank you for the advice, it looks like it will be very useful. Thanks Colin

 

[jhonni \]

Do not mention it!
All diggers in Russia use an oxalic acid for cleaning! It's very fantastic acid! Use it for cleaning and will be happy... and your models!

 

[dano1917]

Method of cleaning with oxalic acid.
If your model of grenade initially was painted and have rust now, you can washing it in oxalic acid. Oxalic acid not dissolve a paint, rust only.
This grenade was find yesterday, now is an empty and in colour.
That model was not ideal initially but it better now after washing.
Good luck!
Eugene.

Hi Jhonni, another point well worth mentioning is that oxalic acid is very mild, and will not rot all the cloth in your basement and turn the pipes green like others such as muratic acid...Dano

 

[Endel]

Nice work, jhonni!

Ive been useing the same ratios of acid with the water (1:10). My small advice, after waching with the acid solution, it`s good to neutralise the acid action with solution of the soda ach (Na2CO3) and then just dry it out. Usually the object quickly picks up a very small layer of rust all over the body, like a dust; and then, last step you must bedaub it with a rust protecting agent. That is experience of mine.
Oh, and before all those steps, I usually remove mechanically the yeasty rust , its just a good opportunity to save the durabilities of reaction of the acid.

Best
E

 

[jeeeensy]

Great thread...keep the tips comming,,regards nick

 

[Millsman]

Hi Jhonni, another point well worth mentioning is that oxalic acid is very mild, and will not rot all the cloth in your basement and turn the pipes green like others such as muratic acid...Dano

Dano

Have you read this?

http://www.jtbaker.com/msds/englishhtml/o6044.htm

I've never used it but I would treat with caution.

John

 

[jhonni \]

Hi Jhonni, another point well worth mentioning is that oxalic acid is very mild, and will not rot all the cloth in your basement and turn the pipes green like others such as muratic acid...Dano

May be you have in view a muramic acid Dano?

 

[jhonni \]

Yes quite so, after washing need neutralise the acide. I prefer used for it just a soap. And then dry it out, and then use a machine oil for conserve model.

So guy's just do it!
But don't eat an oxalic acid it's dangerous!

 

[jeeeensy]

Dano

Have you read this?

http://www.jtbaker.com/msds/englishhtml/o6044.htm

I've never used it but I would treat with caution.

John

Look like a letter i get just before the mother-inlaw visits :bigsmile:

seriously though,, any corrosive/acid/chemicle should be treated
with the utmost of respect, and all counter measures in place before
you use them. Regards Nick

 

[Endel]

... And then dry it out, and then use a machine oil for conserve model.

Yes, it`s ok to use a oil, but it isn`t good to handle it latterly and will be befoul my lovely crates :bigsmile:.

But don't eat an oxalic acid it's dangerous!

...just smell those fumes! Yammy! (actually dangerous too)



E

 

[jhonni \]

Yes, it`s ok to use a oil, but it isn`t good to handle it latterly and will be befoul my lovely crates :bigsmile:.

Need use a rag with oil and rub oil into model.

On photo oiled grenade...
Second way for keep your model after washing is a lacquer for steel!

 

[Endel]

Actually it`s a big challenge to protect and save the examples, as we know, it`s not possible to stop the ruin process, only decelerate it.

 

[Endel]

May be you have in view a muramic acid Dano?

I found this http://www.rainfall.com/pinball1/machines/Gottlieb-Thoro-Bred/gottlieb-thoro-bred.htm Read day Saturday, Sept. 16, 2006

Best
E

 

[jhonni \]

- hydrochloric acid EAT a paint!!
- oxalic acid DON't EAT a paint!
Understand!?

 

[jeeeensy]

- hydrochloric acid EAT a paint!!
- oxalic acid DON't EAT a paint!
Understand!?

Hydrochloric acid... eats light alloys also ,, small parts seem to dissapear in the mix,, try diluting with water to start of with first and use carefully don't forget the gloves and goggles and watch out for the fumes,,

Regards nick

 

[paul the grenade]

Is oxalic acid readily available in the UK?
If so where can i get some to try out?
Cheers, Paul.

 

[Endel]

Is oxalic acid readily available in the UK?
If so where can i get some to try out?
Cheers, Paul.

Hi,

Ask for beekeepers, they use it for a cure of bees.

Best
E

 

[spotter]

Is oxalic acid readily available in the UK?
If so where can i get some to try out?
Cheers, Paul.

Used it when i was doing dodgy antiques (allegedly),,you can get tubs of it here http://www.agwoodcare.co.uk/gbu0-catshow/oxalic acid.html?gclid=CPrCx-mZrJ4CFVSY2Aod_xqbmQ