New fun!

 

Experimenting with cyanotypes. Recipes from an old book I bought as a secondary schoolboy:

J. M. Eder: Rezepte, Tabellen und Arbeitsvorschriften für Photographie und Reproduktionstechnik, Verlag von Wilhem Knapp, Halle (Saale), 1942, 18.-19. Auflage.

A book full of funny stuff!!

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cyano, bleached in NaOH, toned in coffee

image from CT negative

More old techniques: cliché-verre

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cyano, bleached in NaOH, toned in coffee

A combined print from CT negative and transparent from positive photo of letterpress metal furniture. Same technique.

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Similar, but bleached with Na2CO3:

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More, this time cliché-verre and CT: