Re: haunted GUM (i surrender)
i have printed on unhardened gelatin for about a year and a half. it was when i first started printing gum and i didn't know where to buy any hardening agents then and i also liked to have one poison-free step where i could be a little more careless. and i got usable images too. all my development baths are below 20°, as cold as it comes out of the tap. i rarely raise the temperatur and only if i have a reason to. but at the time i used to apply a coat of gelatin before each layer of gum to avoid staining. a feeling tells me it's neither paper nor size.i occasionally got non-clearing layers before, but never that consistent. always a one time thing and a new emulsion and a new sheet of paper eliminated it. i always blamed it on bad pigment handling, brushing the emulsion too deep into the fibers and/or a bad phase of the moon. on the other hand all my other hunches were completely wrong (the dichromate, the gum...). so i will have to look into it. i my experience the gum process tolerates a lot of abuse, but if there's a certain (unknown) tiny thing wrong, which it doesn't like, it ceases cooperation completely. for now gum and me are not on speaking terms! phritz geoff chaplin schrieb: > > I experimented with using non-hardened gelatin and found no difference > in the final print -- I made a total of about 20 prints on unhardened > sized paper. I developed in cold water (20deg or under). The only > problem was the unhardened sized paper was slightly slippery to handle > and presumably is susceptible to fungal attack if it gets wet. Other > than that I could find no difference. > > Geoff Chaplin > > ジェフ チャップリン > > geoff@geoffgallery.net <mailto:geoff@geoffgallery.net> > > www.geoffgallery.net <http://www.geoffgallery.net/> > > Skype: geoffchaplin1611 > > UK mobile (英国の携帯電話): +44(0) 7770 787069 > > Japan mobile (日本の携帯電話): +81(0) 90 6440 7037 > > Japan land line / fax (日本の電話とファクス): +81(0) 166 92 5855 > > ------------------------------------------------------------------------ >
|