Re: Further Gum Woes was Gum woes revisited

  Hi Katherine,
  I'm not a gum printer- PO and the cyanotypes usually take 5-7 minutes in
our Pacific Northwest sun during the late spring and summer. 90 minutes is
too long...
  Susan
  ----- Original Message -----
  From: "Katharine Thayer" <kthayer@pacifier.com>
  To: <alt-photo-process-l@sask.usask.ca>
  Sent: Monday, May 30, 2005 5:16 AM
  Subject: Re: Further Gum Woes was Gum woes revisited

> 90 minutes in the sun, even under overcast sky, seems way long to me. I
> haven't exposed in the sun a lot, but when I have, my times outside in
> direct sun have been less than a minute, and in shadow (reflected UV)
> about 3-4 minutes.
> Katharine
>
> davidhatton wrote:
> >
> > Hi,
> >
> > Ok ya got me. I remember reading 'somewhere' that a gum print should
> > look like a charcoal or pastelle drawing and that the shine effects
> > contrast.
> >
> > Also, in Post factory (my bestest gift ever from my daughter ), it
> > mentions reducing shine by abrading with fine sandpaper. From this I
> > extrapolated that shine was
> > out in gum.
> >
> > As far as my exposures are concerned I'm using a single low contrast
> > 8x10 tri-X in camera neg. trying to produce a monochrome(ish) image. I
> > basically have to overexpose all layers as I only have the Sun as a
> > light source. I thought I had it down but then along come clouds, heat
> > haze etc..etc..The rationale being that ANY print would clear
eventally.
> > Just can't get any depth.
> >
> > Today I tried a single coat print. 1 inch of Dan Smith deep Scarlet, 5
> > ml gum, 10 ml saturated Potted Dick. Print is on unsized saunders
> > waterford. The coating was perfect ( even if I say so myself) even,
> > polished, dried in the dark under a fan. Exposure by my guessometer
was
> > 90 min. overcast sky south western Turkey.
> >
> > I soaked it, washed it with running water, brushed it gently by
> > disturbing the water (not actually touching) over the print. I then
hit
> > it with cold water shower followed by hot water shower followed by a
> > scrubbing brush.Nothing.
> >
> > Is it really possible? This process? The examples in Post Factory are
> > beautiful - but are they real? My wife is hiding all sharp objects and
> > looking worried. I suppose watching your husband scrubbing paper in
the
> > bath is a tad un-nerving...
> >
> > Is there anyone out there using the sun as a light source for gum?
> >
> > David Hatton
> >
> > --
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>

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