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Thread: Cyanotype - 10 times faster

  1. #21

    Cyanotype - 10 times faster

    Interesting thread!
    A question was asked about the cyanotype rex process. This is Terry King's "re-invention", in which the paper is sensitized with ferric oxalate and developed with potassium ferricyanide. You have to buy the PDF from him to get the details but that's the basic idea.

  2. #22

    Cyanotype - 10 times faster

    Thanks Mary,

    Looks like Rex is the same method, but just slightly different chemistry. I am guessing it is Ammonium Ferric III Oxalate that is used; luckily I have some so it may be a busy weekend!

    Best regards,


    Edit: With further thinking, Ferric Oxalate plus a bit of acid may be better ...

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