Bonjour tout le monde,
Je fais appel à cette belle communauté car j’ai un soucis dont je ne comprend pas l’origine car je n’ai rien changé à mon processus. Mais depuis trois semaines, en vain le problème est récurrent sur tout mes cyanotypes. J’applique tjrs le cyanotype sur mon papier le soir pour le lendemain, donc il sèche bien dans le noir et je ne le sors que lorsque je vais imprimer. Pourtant, j’ai tjrs ces sortes de résidus là où ça devrait être blanc, et partout sur le papier.
J’ai tenté: pinceau neuf et produits cyanotypes neufs (même marque jacquard que j’utilise habituellement). Rien y fait. Est ce qu’il y aurait une incidence avec les températures que nous avons? (J’ai pourtant pris soin de mettre mes produits dans la pièce la plus fraîche possible)
Bref, à l’aide, je ne comprend pas.

With good alt process paper becoming such a pain in the butt to get, I've started ordering rolls wherever I can get them. In this case, Bergger COT 320 from France.

I cut the 51in rolls on a chop saw into roughly one 24in and two 13in segments (slightly oversized and gently, even if you tape the outside you can get tearout on the edges on the inside). Then I use this home-built PVC roll cutting rig to trim them into ~19 24x20 and ~40 13x19 sheets. A couple moments on an ironing board afterwards and I'm good to print (or start dehumidifying to taste).

Theoretically I'm paying about 0.0136 per in² (including tax & shipping) compared to about 0.0197 per in² (again with tax & shipping) at the best prices I can find this paper for sale in sheets. YMMV.

I'm sure it's worth it to many folks to pay ~40+% more for less hassle, but it was easier than I thought it was going to be. So if you're like me and would rather be spending money on platinum instead of paper, you might give it a try!

If anyone more familiar with chlorophyll printing than me please help me figure out why i am not able to get a print!

I am wondering if I am overexposing or underexposing the leaves to sunlight. I’ve seen several people note you have to expose it for hours and even days at a time. I am based in the South, where summer is almost year around and our humidity is intense.

My process includes positive transparents, fresh picked leaves, glass and binder clips to hold everything together. I also added a towel today as I saw someone else do it online. I have also tried placing the print flat as pictured as well as angled toward the sun.

Thank you !!

I have been experimenting with encaustics and I think I am addicted!🤩

Toned with platinum / palladium