Re: outdoor gum demo
Hi Keith, "morning" that's the key word, thanks for reminding. Before 10:00 and after 15:00 (3pm) there's very little UV in direct sunlight (compared to peak hours) and shade (seeing little sky) also is a very good protector since UV light doesn't scatter much (unless there are very white - snow, titanium white painted something... - or bare metal surfaces - especially aluminum - around). Letting exposed paper for days -> that's very interesting for sure. I bet they were in pretty dry conditions, how was Chicago's weather lately? Thanks for your participation (very informative as always). Regards, Loris. 15 Nisan 2009, Çarşamba, 11:01 pm tarihinde, Keith Gerling yazmış: > Everything Loris says in that last paragraph is true, and we've all been > in > that kind of situation. > > However > > 1) When I was making large pictures, I was very cramped in my basement > quarters and took the coating and developing procedure outside (I brought > the prints inside to expose). I always did this in the morning, when the > working area was shaded by my house. No problem with drying the coated > prints on a clothesline. This was done on sunny summer days, but in the > shade. (Bugs, birds, cats and dogs were a MAJOR hassle, though) > > 2) Recently, I was going thru a stack of plywood prints with the chore of > re-coating rejects with gesso and I found print that had been coated and > exposed several days (4-5?) prior. I put it into the water with the > notion > that I would flush out the dichromate and have a useless print only suited > for re-cycling. It developed fine. No "dark hardening" whatsoever. Keep > in mind that it was in a even stack of other pictures, and not exposed to > a > lot of air, but certainly time alone did not cause this gum to harden. > > If it were my project, I'd skip the tent, stay in the shade and try to > keep > the drying prints especially well shaded and stack them up until they were > ready for exposure. > > Keith > > > > 2009/4/15 Loris Medici <mail@loris.medici.name> > >> Hi Laura, AFAIK dark reaction won't let the pre-coated paper last for >> more >> than a couple of hours w/o negative effects (such as fogging, or even >> completely hardening...) that's so true when it's hot and humid. You >> have >> to store the pre-coated papers in desert dry conditions to have a chance >> - >> and I can't tell something about that since I use coated paper pretty >> quickly. >> >> I would try to find a yellow tent and to put the coated papers under >> shade >> (a box with an opening at the side, opening facing opposite side of >> tent's >> entrance) until they're enough dry to print or I would blow dry prints >> with a hairdryer quickly (always in a yellow tent!)... >> >> But, one thing that would bother me in a similar position would be the >> fact that in demonstrations, the more you're out of your standard >> procedure, the more you risk to fall in a ridiculous / awkward >> situation... >> >> Regards, >> Loris. >> >> >> 15 Nisan 2009, Çarşamba, 10:08 pm tarihinde, Laura V yazmış: >> > Our graphic association is taking part in an arts festival in May. We >> > will be working outdoors in various processes, and I got the bright >> (or >> > dumb) idea to make gum prints in a tent, exposing them to sunlight. >> Has >> > anyone ever tried anything like this? Is a tent light-fast enough for >> > this? I was thinking I could have sheets of paper already coated in >> > gum/pigment mixture and stored in a light-fast box to save having to >> > allow them to dry while nobody is allowed to leave the tent! How long >> > can you leave coated sheets before exposing? Can I do this the day >> before? >> > >> > Any tips appreciated. Thanks! >> > >> > Laura >> > >> >> >> >
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