[Jewelry making - Article 00335] - [Orchid] [Again] Cleaning files

[Lovschal]

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    About 6 months ago or perhaps even longer - time rushes - we had a
    discussion about bringing old files to live again. 

    There were various recipees, and in the meantime I have experimented
    a little with these. I have tried citric acid, old pickle,
    hydrocloric acid and other acids and aggressive media. I found out
    that the recipee from Martin Niemeijer worked best for me, so here
    it comes: 

    Clean the files thoroughly with a steel brush and soak them in a hot
    soda solution to degrease them. Rinse well in running water and dip
    shortly in a mixture of 7 parts water, 3 parts sulphuric acid and 1
    part nitric acid. (Do it outside and with your back to the wind, the
    vapours are poisonous). After a few seconds in the acid mix remove
    the files, clean them again under running water and dip in the soda
    solution again to neutralize the acid and dry thoroughly. I have
    found that filing in a piece of chalk after the drying helps to
    prevent the files from rusting afterwards. 

    And then: Thanks Martin and happy filing to all. 

Kind regards
Niels L=F8vschal, Rutsker, Denmark
loevschal AT mobilixnet.dk
phone (+45) 56 94 90 60

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