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  1. #1
    Christopher Walrath's Avatar
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    Blackening for Wood or Metal

    (taken from Photographic Facts and Formulas - 5th printing - Wall and Jordan

    BLACK FOR WOOD AND METAL

    Use vegetable black mixed with terebene or turpentine. When used on the inside of the bellows, the black is made into a stiff paste with raw linseed oil and then thinned down with turpentine.

    BLACK FOR CAMERAS

    This may be used for wood or leather, inside or out.

    Nigrosine, spirit soluble . . . 2.5g
    Bismarck Brown . . . 0.65g
    Alcohol . . . 3.0cc
    Aniline . . . 29.0cc

    Heat the dyes with the alcohol until dissolved. Then add the aniline and apply with a brush and dry before a fire or in sunlight. For a dead mat varnish, lampblack may be rubbed up with gold size or shellac varnish, using as little of the liquid as possible. Then thin down with turpentine.

    TO BLACKEN ALUMINUM

    Clean perfectly free from grease by washing in soda solution, wash well and immerse in . . .

    Ferrous sulphate . . . 1 part
    Arsenious Acid . . . 1 part
    Hydrochloric Acid . . . 12 parts
    Water . . . 12 parts

    When the color is deep enough, dry with fine sawdust, and then lacquer. This solution is intensely poisonous.


    I have not used these formulas in any way. Just passing them along to APUG.
    Thank you.
    CWalrath
    APUG BLIND PRINT EXCHANGE
    DE Darkroom

    "Wubba, wubba, wubba. Bing, bang, bong. Yuck, yuck, yuck and a fiddle-dee-dee." - The Yeti

  2. #11
    Christopher Walrath's Avatar
    Join Date
    Dec 2005
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    Good input all.
    Thank you.
    CWalrath
    APUG BLIND PRINT EXCHANGE
    DE Darkroom

    "Wubba, wubba, wubba. Bing, bang, bong. Yuck, yuck, yuck and a fiddle-dee-dee." - The Yeti

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