Time is running out, and after a lot of thinking (what are you zinking about?), I decided to go for the old alchemy. Only one paper got destroyed when I tried hard in the darkroom to print on it, but it does not react to light or developer like ordinary paper.
What it does react to is heat and chemicals, so all theese in the set here is treated with heat from the stove (where you put pans on), a very strong chemical called Plumbo (Norwegian-used for cleaning pipes, you add it in its dry form and put water to it), then some steam.

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