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  1. #41
    titrisol's Avatar
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    Ascorbate with carbonate to pH about 10 does indeed develop
    I just tried it with a piece of film leader and it turned it black in about 2 minutes (Ilford Fp4)
    Mama took my APX away.....

  2. #42

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    Help Titrisol!!

    I followed the recipe for Caffenol for 500ml as follows:

    500 ml of water (for 120)
    1 gram Vitamin C
    4 teaspoons washing soda
    8 teaspoons instant coffee

    I mixed the Vitamin C first till completely dissolved (@ 75 degrees), then baking soda till completely dissolved, then coffee till dissolved.

    And tried to develop 2 rolls of 35mm. It was fomapan 100 exposed at asa 64. Agitation 5 sec. (gentle) every minute. Total dev time 30 minutes at 75 deg.

    I got the absolute faintest, barely there negs. The film leader was a pale grey.

    Any suggestions what I did wrong? Too many rolls? Temp to hot?

  3. #43
    kwmullet's Avatar
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    Quote Originally Posted by jsouther
    [...]
    4 teaspoons washing soda
    8 teaspoons instant coffee

    I mixed the Vitamin C first till completely dissolved (@ 75 degrees), then baking soda till completely dissolved, then coffee till dissolved.
    [...]
    Did you mean to say baking soda above? Washing soda and baking soda are two different things.

  4. #44

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    There you have it. I'm a moron.

    I'm not sure now why I was thinking they were the same. How embarrassing...

    Thanks for setting it straight for me kwmullet.

    I'll go shrivel up and hide in the corner now

  5. #45
    kwmullet's Avatar
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    Your experiment didn't fail, though. You haven't lost a session with Caffenol, you've invented Caffenol-Minus! The alternate developer for N-4 development!

  6. #46

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    Yes indeed! I guess I was just really anxious to try this out and got confused.

    And to think I just spent a chunk of change on bulk chemicals and a scale, etc... I really need to pay better attention!

    Thanks for making me feel better, though I confess my face is still beet red!

  7. #47

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    I want the ultimate in a wide variety of developing agents. Here is my formula that I hope to test.

    16 ounces of orange juice
    4 tablespoons of regular coffee
    5 ounces of bacon fat
    1 egg
    top of to 1 liter with 98.6ºF pee.

    Strain thru 4 slices toast..unbuttered

    heat to 216ºF for 1/2 hour.

    Find a new place to live.
    Claire (Ms Anne Thrope is in the darkroom)

  8. #48
    Steve Smith's Avatar
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    I have just tried the 8 oz water, 2 tsp soda and 4 tsp coffee recipe to develop a roll of FP4+ and it worked!

    I was expecting fairly light, brown stained images but I actually got decent dark grey images. Even the first half of the roll where some idiot (me) had left the camera set to 400 ASA would just about be printable.

    I might try to print some tonight.


    Steve.
    Last edited by Steve Smith; 08-25-2006 at 02:45 PM. Click to view previous post history.
    "People who say things won't work are a dime a dozen. People who figure out how to make things work are worth a fortune" - Dave Rat.

  9. #49
    alinCiortea's Avatar
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    Quote Originally Posted by Donald Qualls View Post
    for Tri-X and Fomapan 100, about 30 minutes -- this is at 68-70 F, with agitation ten seconds out of each minute.
    I've only used one inversion per minute and might have missed a couple. The negative is very very thin... I hope I can scan it though. I guess it's either the agitation, or the my cheap coffee was too cheap for this purpose
    I'm considering an extra tsp. of coffee next time for the same agitation pattern.

    LE> oh, wait. dumbass me... i've increased the water to 12oz but added the rest as for 8oz :|

  10. #50
    alinCiortea's Avatar
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    it did scan
    Attached Thumbnails Attached Thumbnails 03_2_w.jpg  

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