Re: Mottling in lighter tones in cyanotype?
> Try another paper / another batch of the same paper... (COT 320 is > wonderful for instance.) I'm going to kill myself:-) I switch to Platine because Crane's and COT 320 were staining in highlights... > Optional: Also switch to New Cyanotype (it's much better in highlights > delicacy, but it's even more finicky with paper...) I've mused on this... I thnk I'm stubborn:-( > 10 minutes of air drying (at max.) is enough if you force dry the paper > later; you need the sensitizer in paper, you can start to blow hot air as > soon as the surface shine is gone... Would speeding up the drying change it - I would think air drying would allow emulsion to absorb more. I'm just trying to puzzle why this might affect my mottling (I'm with you on emulsion coming off surface?) > Why are you diluting the sensitizer BTW? Sorry, forgot to mention this. A few weeks back I compared 1:1 and 1:1:2 dilutions after seeing a posting by Cristina Anderson. I saw more runoff/bleeding with the 1:1? My problem with Crane's platinotype (which I still have) and then Crane's Weston Diploma was staining in highlights and galloping runoff - compared to where I am now with Arches Platine. I think I've gotten closer to good prints - but now mottling... Let me think.
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