U of S | Mailing List Archive | alt-photo-process-l | Re: Gum Humidity Question

Re: Gum Humidity Question

What do you use to coat the damp paper.  Hake? Foam Roller? Spray?

Candace Spearman

----- Original Message -----
From: "Keith Gerling" <Keith@GumPhoto.com>
To: <alt-photo-process-l@usask.ca>
Sent: Wednesday, September 27, 2006 3:47 PM
Subject: RE: Gum Humidity Question

> Tom Sobota mentions a problem that I find most problematic about a drier
> environment: the tendency of dry paper to gulp down emulsion faster than
> can be applied.  For what it is worth, I thought I would pass along a
> description of my own procedure when working with paper.  I have a pretty
> anarchistic approach to gum printing.  I can tolerate most kinds of
> and screw-up and have been known to employ belt sanders and propane
> to remove gum in drastic situations and STILL end up with a satisfactory
> print.  However the own thing that I *cannot* tolerate is lack of
> registration, and paper tends to shrink and expand dramatically depending
> upon humidity.  I have placed a small mist vaporizer in a box where I keep
> my paper when I am working on it.  Before I coat any emulsion, the paper
> goes in this box until it gets as relaxed as a piece of over-cooked
> pappardelle.  Really really damp.  The emulsion goes on with no problems.
> Then the paper goes into my tiny darkroom which is constantly dried by
> of a dehumidifier.  It turns bone dry quickly - and shrinks nearly a
> centimeter in the process.  Then is goes BACK into this rainforest of a
> to get soggy again, expand, and I usually make the exposure while the
> is still quite damp. This highly humid paper clears more consistently than
> paper under drier conditions.  I've left coated paper in this box for a
> with no ill effects.
> Keith
> www.gumphoto.com