Friday, July 12, 2013

Caffernal

After having succeeded with a Caffenol using Sodium Hydroxide as alkali, the Caffenol C+, I wrote an article about it at ipernity.com, I started a series of experiments to see the limits of how few I must use to develop. From many developers made with some logic I experimented, only perhaps the Caffenol 3335 (3 g Vit. C, 3 g Sodium Hydroxide, 3 g Coffee and 5 g Potassium Bromide per liter) is worth a try. But maybe you should raise the potassium bromide to 10g/l. Or, wait, you don't need so much, the proportions are not quite right as I discovered later.

But the new project I have is to find a based on coffee and vit. C developer that works similar to Parodinal. I started calling it Caffedinal but I worked so hard until I got reasonable results that I changed the name to Caffernal. I am still experimenting but I can already say it will be a reality. The photos below were made using a 1:25 solution and 20 minutes at 27ÂșC and I think it will work at 1:50 solution too, already tried but the duration was short (45 minutes), images too weak.

The final recipe is still not fixed but it is more or less obvious that coffee, vit. C, Sodium Hydroxide and a pinch of preservative and restrainer will also be included.

A corner in my flat
Picture 1 - Semi-stand development, not recommended, see the shadows of the perfuration

Kitchen darkroom
Picture 2 - 3 minutes constant agitation and the one minute every 5 minutes

Not chinese, all portuguese
Picture 3 - Same as Picture 2

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