Re: Clearing cyanotypes, minimizing bleeding into highlights
1) try avoiding Tween- Traditional Cyanotype (Bostick and Sullivan kit). 3:2 mix (A:B) - to increase speed. Two drops Tween 20 per 10ml emulsion. - Mark passed on Sam Wang's (?) suggestion to clear the exposed paper inverted in a water bath. I add about 5 ml of a 1:100 dilution of Hydrochloric Acid to about 2 liters of clearing bath to start. - Remove print, lay on paper towel - lay another sheet of paper towel on top - remove excess water, dry flat face up.
2) try avoiding acid, or give only a 30" first wash, then turn to tap water
3) do you notice bleeding before or after drying?