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  1. #1
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    Wink Grenade cleaning

    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.
    Attached Images Attached Images
    Last edited by Weasel; 27th November 2009 at 02:01 AM.

  2. #2
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    notice:
    - Washing a model with polymeric brush after every 40 min.
    Last edited by Weasel; 27th November 2009 at 02:02 AM.

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

  4. #4
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    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!

  5. #5
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    Quote Originally Posted by jhonni \ View Post
    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

  6. #6
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    Nice work, jhonni!

    Iīve 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 , itīs just a good opportunity to save the durabilities of reaction of the acid.

    Best
    E

  7. #7
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    Great thread...keep the tips comming,,regards nick

  8. #8
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    Quote Originally Posted by dano1917 View Post
    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

  9. #9
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    Quote Originally Posted by dano1917 View Post
    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?

  10. #10
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    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!
    Last edited by jhonni \; 26th November 2009 at 09:16 PM.

 

 
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