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Cyanotype Toning
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25th February 2021, 04:10 PM
Roy_H
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Join Date: Nov 2008
Location: Suffolk
Posts: 353
Great experiments and very pleasing effect Ian.
Try using a 1% or 2% sodium bicarbonate solution as a bleach. May take a bit longer but could be less aggressive.
I plan on trying some toning with tannic acid (basically your tea & coffee!) and also lead acetate (violet). Need to make the lead acetate though...
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