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Cyanotype via Large Format dipshit here
Update on it so far; I successfully took 4 images, a fifth was underexposed too much. However, i've had issues in dev where the chemistry simply washes off the paper.
I think this is due to the bottom part of the chem layer not being affected enough by the UV. Did a test dev on one of those four images where I burned it in under a UV for a minute, and it seemed to help though I had a heap of chemistry come off the page and splotch on the image.
Trying three new papers this weekend, going to expose for much longer (three hours min) and also have pre-flashed an alternate for each paper stock for one minute under UV lights (strong enough that 10mins fully exposes a negative on them). Will report back once this all shakes out.
It's fun though!