U of S | Mailing List Archive | alt-photo-process-l | Re: brush vs tray size for gum

Re: brush vs tray size for gum

Welcome to the club, Mark. Things are forever coming up that make me ask myself, hey, haven't I been saying that for months, or years? We might as well accept it; no one ever listens to anything anyone says here.

I do actually remember your saying that, but I don't remember the context or the ensuing discussion. At any rate, I've been saying for years that I think my cool humid environment is probably the ideal environment for gum printing, and I've also said many times that I suspect that the reason the photoflood works so well for me has to do with my humid environment, which means I can get very short exposures with it. And one of the new pages I'm developing as I've been working on a major revision of my website is specifically about humidity and gum. So this is hardly the first time it has occurred to me that humidity is a factor in gum printing; I'd just never thought of it as possibly being a significant factor in other issues where observations differ.

Katharine



On Sep 28, 2006, at 12:05 PM, Ender100@aol.com wrote:

ahem, some time ago I remarked on the list that I thought humidity had more of an effect on PT/PD than seemed to be mentioned in the literature...then I speculated that perhaps this might be true of other processes............................................................. ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ..back to my closet—I may be safer there if that spontaneous thingy should try to attack me again.

Best Wishes,
Mark Nelson

Precision Digital Negatives - The System
PDNPrint Forum at Yahoo Groups
www.MarkINelsonPhoto.com

In a message dated 9/28/06 1:59:24 PM, kthayer@pacifier.com writes:


And maybe humidity has more of an influence on everything than we've
taken into account; maybe the reason for differences in observations
between different gum printers is as much a function of the
environment as of other variables we have noted.  This thought came
to me after reading Keith's observation that a damp paper clears
better for him than a drier paper;  I thought, well,  maybe that's
why I was able to print tricolors on unsized paper without stain for
years (although I can no longer find a paper that will do that)
because I was printing in a very humid environment.   And other
differences may also be related to this as well; who knows?
Katharine