Re: Gum over Cyanotypes
Stunning work as usual Loris! :)
Question why do you size after cyanotype? Is it because the cyanotype bleeds after?
Can you size, then cyanotype, then size again? or does this defeat the purpose, as it will shrink/warp the paper even more?
Quoting Loris Medici <firstname.lastname@example.org>:
I did few gum over cyanotypes recently and I happen to like them much. See the most recent one below here: http://dwarfurl.com/008fa The print is on HCl acidified (2 minutes in 2.5%) Fabriano Artistico EW. One -1/3 stop exposed cyanotype layer + 3 gum layers. (1. PR206 5% AD +1/3 stop exposure, 2. PV19 Rose + PBk9 5% AD normal exposure, 3. PBk9 2% AD +1/3 stop exposure.) I print the Cyanotype on unsized paper, then size with 3% gelatin. After sizing, the paper change dimensions and you can't register the negative perfectly on the first gum pass - 2mm larger in both horizontal and vertical orientations (print size 10x6.6"), the registration gets perfect only in the second or third gum pass. (See the resulting blur at the right edge in the middle.) My question is: How do you manage to get perfect registration for gum over layers? Any tips and tricks would be highly appreciated. Regards, Loris. P.S. I have read Lukas Werth's method somewhere else: Affix the paper on dimensionally stable support - such as an aluminum sheet - with gelatin, print, varnish the print (acrylic binder + mineral spirit) to "protect" the gum layer and then put the print in warm water (this is where you need "protection"!) to melt the gelatin and release the print from the support. I would like to hear about any suitable varnish that can be used for this purpose too...