Re: Newbie Gum fun Continued
Hi Judy, Thanks for that. The link you sent is missing a " l " at the end. http://www.alternativephotography.com/books/js_post_factory.html Wow great resource! Ivory black, alrighty going to buy some now :) Ta Jacek On Tue Apr 24 13:46 , Judy Seigel <jseigel@panix.com> sent: > >On Tue, 24 Apr 2007, Jacek Gonsalves wrote: > >Jacek, > >If you go to www.alternativephotography.com/books/js_post_factory.htm >you'll find the first issue of Post-Factory Photography, which has an >extended chapter on gum printing, a distillation not only of 14 years >teaching the process to and photography art students, but also my own >extensive testing. You can download it as PDF for free. > >Meanwhile, your rundown suggests a new swimmer beginning on the high >diving board (to me, anyway). For instance, in my experience, lamp black >is one of the most difficult pigments to use. I'd suggest (and do in the >article) starting with some easier colors, maybe a burnt sienna, tho if >you want winsor newton and a black, their ivory black, while weaker, is >friendlier. > >And although some high-diving board printers do use gelatin size without >a hardener, and effects can be very nice... not advisable to begin with. > >etc. > >Judy > >> Hi all, >> >> Well I finally took the plunge on the weekend and did my first ever >> print in gum. >> The results were...well something actually came up and I can see I have >> a long way to go! :) >> >> I used W&N lamp black tube, found I couldn't weigh it on my scale when I >> squeezed 2 pea sizes out, nothing registered on the scale! :) >> >> The paper itself got stained perhaps of too much pigment or because I >> didn't add enough gelatin to the paper? >> >> My paper seemed to have curled and the negative seems to not have sat >> comfortably on it, even with a heavy glass on. I might have to put >> something heavier or try keeping the paper flat when drying with all the >> preshrinking and gelatin. Perhaps I can find plans on the net to build a >> Contact Frame? >> >> The Arches paper Smooth 300gsm, I had an issue with dotted speckles, I >> found that the water preshrinking I used wasnt that hot. The water >> couldnt penetrate the whole paper, therefore getting speckles in the >> paper. Also the fact I was preshrinking for only 10 mins. >> I used this paper to develop a print, and the part where you can see the >> dotted speckles, has been stained with the lamp black pigment, the rest >> seemed unstained. >> >> I ended up using boiling water to preshrinking another batch of the same >> Arches paper, and I got no more speckles! Though I might have damaged >> the actual manufacturers hardening of the paper? Also it really gave off >> fumes with the boiling hot water, I had to take it outside. >> >> I tried a batch, Katharine suggestion of below 140F(60C), unfortunately >> it still has the dotty speckles. I changed the water at least 4 times, >> their still there! :( >> >> Reading the Altlist I see some people just use lukewarm water to >> preshrinking? >> Also what paper do you use and how do you preshrinking it? With boiling >> hot water, lukewarm water etc? >> >> I also tried Acquarello Fabriano cold press with no preshrinking, a >> brushed on gelatin on one side. Developed the paper and got staining. >> Perhaps another gelatin coat would have fixed it or less pigment? >> I'm not using any hardners in my gelatin and perhaps that could also >> account for the staining. >> >> Is a RED safelight, ones used in the darkroom safe to use when coating >> gum? What do you use? >> More to come... >> Thanks >> Jacek >> >> >)
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