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M40 Luftwaffe relic: should i use acid?

Article about: by Datrus Very nice decal. I agree

  1. #31

    Default re: M40 Luftwaffe relic: should i use acid?

    I see no problem with using a plastic bucket. The acid will probably affect a metal bucket and leave it at least looking horrible with the yellow/green salt buildup. At worst it might lift the galvanising off the bucket and cause it to start rusting also. (this stuff is an acid after all).

    Don't forget to neutralize the acid before drying the helmet off and even when the helmet is dry, in areas where you have fully removed the rust (and probably the paint too, depending on how hard you scrubbed) that the nice bare metal will start rusting again so some sort of inhibitor like renwax etc is required.

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  3. #32

    Default re: M40 Luftwaffe relic: should i use acid?

    I have had 2nd thoughts about cleaning these up and have listed them on my site..i am sure oxalic acid will work wonders but to be honest i am too busy and dont want to ruin them so i think it best i let someone more expert have a go if they want....
    wayne

  4. #33

    Default re: M40 Luftwaffe relic: should i use acid?

    Quote by Glenn66 View Post
    Don't forget to neutralize the acid
    Glenn you mean to brake down it's strength by adding water?
    Looking for the photo albums of Leutnant Emil Freitag, 3. / G.R. 377

  5. #34

    Default re: M40 Luftwaffe relic: should i use acid?

    Quote by don_kihotis7 View Post
    Glenn you mean to brake down it's strength by adding water?
    No, the action of the acid causes yellow/green salts to form and so when the soaking and scrubbing is complete you have to give the helmet another soak in a solution of Na2CO3 (Sodium Carbonate) to neutralize those salts. Then you can wash in fresh water and then quickly dry before rust starts again.

  6. #35

    Default re: M40 Luftwaffe relic: should i use acid?

    It sounds really complicated but i'm sure after the first try things will look simple
    I will look for a video in Youtube to see the whole procedure in action.
    Looking for the photo albums of Leutnant Emil Freitag, 3. / G.R. 377

  7. #36

    Default re: M40 Luftwaffe relic: should i use acid?

    here we go chaps i got a 500g bag of what looked like coke i wish hahaha and i cleaned 7 helmets on a roll....this is the result....
    wayne
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  8. #37

    Default re: M40 Luftwaffe relic: should i use acid?

    here is another helmet i cleaned up....
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  9. #38

    Default Re: M40 Luftwaffe relic: should i use acid?

    i have ordered some Sodium Carbonate to stop the smeg build up.. warm soapy water has worked with the rest of the helmets i cleaned except 1 so that need to be soaked to stop the white build up....

  10. #39

    Default Re: M40 Luftwaffe relic: should i use acid?

    G'day Wayne, Looking good! Whats your website address Bud?
    Regards Phill

  11. #40

    Default Re: M40 Luftwaffe relic: should i use acid?

    ww2relicsandcollectables.co.uk

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