WTF Borax/Gold Chloride toner Q

Discussion in 'Contact Printing' started by mark, Jan 1, 2006.

  1. mark

    mark Member

    Messages:
    5,270
    Joined:
    Nov 13, 2003
    So I have some time to finally print the pics for the alt process exchange and here is the problem.

    I mixed some gold chloride/borax toner on the 23rd of december when I was printing a christmas present. It worked fine.

    Today on the first the toner seems to not be working at all. I put the POP in the toner, and after about ten minutes I do not see a real difference in color. Put it into the Sodium Thiosulfate and it bleaches A LOT. This did not happen on the 23rd. On the 23rd I got a rather cold tone image from the toning and the print did ot bleach at all in the fix. Is this a mix it a use it thing or it will die.

    WTF is going on?
     
  2. smieglitz

    smieglitz Member

    Messages:
    1,941
    Joined:
    Oct 18, 2002
    Location:
    Climax, Michigan
    Shooter:
    Large Format
    I've had the same experience of the borax-gold toner exhausting quickly whether used to capacity or not.

    Try Clerc's thiourea-gold toner instead. It keeps much longer. It gives a lovely purplish tone with POP. Instructions for mixing it can be found in White's article on Van Dyke Brownprinting on the unbinkingeye.com site.

    Joe
     
  3. mark

    mark Member

    Messages:
    5,270
    Joined:
    Nov 13, 2003
    what is thiourea?
     
  4. ann

    ann Subscriber

    Messages:
    2,920
    Joined:
    Sep 10, 2002
    Shooter:
    35mm
    thiourea is another name for thiocarbamide.

    It is used in gold toners and in vesions of sepia type toners.
     
  5. David A. Goldfarb

    David A. Goldfarb Moderator Staff Member Moderator

    Messages:
    17,980
    Joined:
    Sep 7, 2002
    Location:
    Honolulu, Ha
    Shooter:
    Large Format
    My impression is that borax/gold chloride toner is just not very long lasting. At the albumen workshop I attended, Daniel Levin said that he tones about 12 8x10's in 2 litres of toner (containing 1 g gold chloride), and he doesn't keep it after the session. He gets about 12 prints ready before mixing the toner. To get the most out of the toner, don't print with a wide black border. We also rinsed the prints thoroughly before toning, which I think would also apply to Centennial POP.
     
  6. cjarvis

    cjarvis Member

    Messages:
    183
    Joined:
    Sep 24, 2002
    Location:
    Maryland
    Shooter:
    Large Format
    I believe that to be true for gold borax or gold thiocyanate. They need to be replenished as they're used.
     
  7. Schlapp

    Schlapp Member

    Messages:
    740
    Joined:
    Nov 18, 2004
    Location:
    Isle of Lewi
    Shooter:
    Medium Format
    What's the score with Plat toner in citric acid? I used some to great effect a week ago on POP but when I looked at it this morning the toner had gone that purple-ish exposed POP colour. Is it still OK to use?
     
  8. cjarvis

    cjarvis Member

    Messages:
    183
    Joined:
    Sep 24, 2002
    Location:
    Maryland
    Shooter:
    Large Format
    You know, I misspoke. Shocking, I know...

    Gold thiocyanate does not need to be replenished, as it doesn't keep well in solution, so it's mixed/used on a session-by-session basis.