[Jewelry making - Article 01098] - Re: [Orchid] Cleaning a file

[prhoades]

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    I accessed your website and found helpful information on cleaning
    small, fine files used for boat modelling. Thank you. 

    I used the following procedure which produced outstanding results so
    thought I'd share this information with you. For safety reasons I
    decided not to utilise nitric acid or dilute sulphuric acid. Instead
    I used battery acid 12/50 undiluted and soaked the files in this
    solution for one hour. The files were then removed and washed off in
    clean water.Next I soaked them in a strong solution of Baking Soda &
    Water ( approx. 2 tablespoons to 1/2 litre water ). They were left
    in this solution for one hour. I then rinsed them again in clean
    water and noted oxidation (rusting) started to occur! To counter
    this I then placed the files in a solution of oxalic acid ( mixed
    1:10)and left them for one hour. I then removed them from this
    solution and left them to air dry. ( important - do not rinse
    solution 

Kind regards 
Peter.


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