Re: Bleach-development with gum
I see. Well, we used plain stationary paper in the Istanbul workshop and the oil was permeating instantly - probably you're using a special inkjet paper. Charcoal starting fluid? Seems like a nice solution - my compliments. Is it something similar to Zippo lighter fuel? We don't have liquid starters here, only dry ones... Regards, Loris. From: Keith Gerling <keith.gerling@gmail.com> Reply-To: <alt-photo-process-l@usask.ca> Date: Thu, 06 Dec 2007 17:33:10 -0600 To: <alt-photo-process-l@usask.ca> Subject: Re: Bleach-development with gum That's a good idea - measure the print, print inkjet to size, repeat. It wouldn't matter if it DID keep shrinking. But this Masa is too thin handle. I really need to have it mounted. It takes forever for the oil to permeate the paper and it contaminates everything. One has to be very careful where one places a negative or what one touches. But I found a solution: charcoal starting fluid. Goes on very fast, evaporates from wet to very dry in a few minutes. No need for a mylar or plastic-wrap barrier because the paper is translucent but not very oily. And in an hour all traces have evaporated and you can't tell it was ever soaked - the paper reverts back to the original and so is easy to store. On Dec 6, 2007 2:35 PM, Loris Medici <mail@loris.medici.name> wrote: > Hi again Keith, > > I got wrinkling only in one occasion - but I haven't used sheets bigger than > 11x14". > > Why you say that about baby-oiled negatives? We used them in the Istanbul > workshop. (Yes, they were messy if that's your problem - I guess you have to > make a good stock of blotting paper!) > > Since you're using/testing el-cheapo paper negatives, let me quote something > that I've read in the HybridPhoto.com forums -> paper shrinks considerably > after the first printing but not much (almost none) in subsequent printings. > Therefore you can just make two sets of negatives after measuring the amount > of shrinking: first set contains only one negative that you're going to use > for the first printing, second set contains the negative(s) you're going to > use in subsequent printings (on shrinked paper) which should be printed > smaller by the same % of shrinking you have measured before... > > This is something that was suggested by the user "dwross" - eventually this > method works well for her. (BTW, she has a very interesting website about > silver gelatin emulsion making!) > > Anyway, if that also works well for you then you won't need to affix Masa on > the support for dimensional stability - the second negative set (consisting > of smaller negatives) will offset the shrinkage! > > Regards, > Loris. > > > From: Keith Gerling <keith.gerling@gmail.com> > Reply-To: < alt-photo-process-l@usask.ca> > Date: Thu, 06 Dec 2007 13:17:36 -0600 > To: <alt-photo-process-l@usask.ca <mailto:alt-photo-process-l@usask.ca> > > Subject: Re: Bleach-development with gum > > Ok, three observations, > > 1) the wrinkling and puckering dries down pretty well (but coating is still > problematic) > 2) unsized Masa stains > 3) anybody that successfully uses baby-oiled negatives must have the > patience of a saint and plenty of time > > Keith > > > > On Dec 6, 2007 12:49 PM, Keith Gerling < keith.gerling@gmail.com > <mailto:keith.gerling@gmail.com> > wrote: >> Thanks. I just coated an un-sized sheet and it is drying now and I'm >> concerned. Does your 3M adhesive-mounted Masa pucker and wrinkle really bad? >> A month ago, I tried mounting with gelatin (doesn't stand up to a long soak) >> and 3M. I was having problems mounting it evenly, bu now with four hands (my >> son) I mounted several sheets with 3M spray. The one I just coated was >> puckering before I could get the emulsion smoothed out. I'm assuming these >> bubbles are from spots of paper not hit with spray, but if I spray any more >> it >> gets really messy. >> >> >> On Dec 6, 2007 12:23 PM, Loris Medici < mail@loris.medici.name >> <mailto:mail@loris.medici.name> > wrote: >>> Hi Keith, >>> >>> Yes it applies to multi-layer prints on Masa too. But I think there's >>> something wrong with my sizing method; I normally size using a 3% 250 Bloom >>> gelatin - sizing + hardening are both done in the same time (I add 1ml >>> formalin per 1g of gelatin into the solution before applying it to the >>> paper). >>> >>> I decided to use a lower gelatin concentration after Christina's advice of >>> brushing harder and working the sizing into the paper's fibers - as I >>> understand it. Perhaps the higher concentration (combined with hard gelatin) >>> was making the surface too slick as Christina suggested. >>> >>> Anyway, I just finished sizing few 1/4 sheets of Fabriano Artisico (no >>> Traditional and/or Extra White designation on the packaging) with 1% >>> gelatin, brushing vigorously -> will report how it went... >>> >>> BTW, the bleach developed print also was done on unsized Fabriano Artistico. >>> >>> Another note: Unsized Masa stains! (Fabriano too, but much less compared to >>> Masa...) So try it both sized and unsized, see for yourself. I may also size >>> few sheets of Masa later (with the new 1% concentration) if all goes well >>> with Fabriano. >>> >>> Regards, >>> Loris. >>> >>> >>> From: Keith Gerling < keith.gerling@gmail.com> >>> Reply-To: < alt-photo-process-l@usask.ca >>> <mailto: alt-photo-process-l@usask.ca <mailto:alt-photo-process-l@usask.ca> >>> > > >>> Date: Thu, 06 Dec 2007 11:59:50 -0600 >>> To: <alt-photo-process-l@usask.ca <mailto:alt-photo-process-l@usask.ca> > >>> Subject: Re: Bleach-development with gum >>> >>> Hi Loris, >>> >>> I'm finally getting around to working with Masa. I noticed in this post >>> that you say you do not size? Does that apply to your multicoat prints on >>> Masa as well? I've spent a solid morning in a frigid workroom shrinking and >>> affixing Masa and I don't want to mess it all up. >>> >>> thanks >>> >>> Keith > >
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