From: Judy Seigel (jseigel@panix.com)
Date: 05/03/03-11:34:21 PM Z
I think anyway Clay is teasing with that subject line -- trying to act
like spam-I had about 40 e-mails when I logged on tonight on the topic,
definitely promising more tumescence.
Relief in printing is promised in a number of formulas, I've filed them,
wherever, but not tried. However checking Cassell's I see entries for
"Relief, Gelatine," which says "see Gelatine Reliefs" and Relief,
Photographs in, which claims enough relief to cast in plaster of Paris
(tho of a high-contrast print), and ends with a list of see alsos...like
Bas reliefs, and photo lithophane. I'll add that many years ago I saw
some lithophanes reproduced in a photo magazine -- they were exquisite.
I also remember the cover of an early Untitled (from Friends of
Photography), if memory serves by Darryl Curran -- a charming relief --
but I don't know if any of them give the detail and gradation of the gum
print.
I'd also check some of the Dictionary of Photography's from the '20s
through 40s... odds are they'll have something on the topic too.
Judy
On Fri, 1 Jan
1904, Sandy King wrote:
>
> Clay,
>
> If you find a solution to your question please let me know. Physical
> relief is the holy grail of carbon printers!!
>
> Best I can suggest is to soak the print in a dilute solution of
> glycerine. Some of the glycerine will remain in the colloid and hold
> moisture, slightly increasing the thickness of the colloid layer and
> apparent relief. Someone told me once that you could get great relief
> with carbon this way, but the fellow omitted the details, and you
> know what they say about the devil.
>
> Sandy
>
>
>
> >Anyone, anyone..
> >
> >Okay, so I was doing a batch of gum-overs today, and right as
> >development was finished, I marveled over the relief that water
> >swollen gum always shows. I have done a lot of these, but every time
> >I see it, I just think the surface relief of the 'mountainous'
> >shadows is really cool. I know that carbon printers wax lyrical over
> >the physical relief their process can exhibit, and I began to wonder
> >if there is any way short of a gazillion gum layers to preserve that
> >relief in gum. I'm wondering if there is some sort of process that
> >causes the remaining gum after development to swell and stay swollen
> >as it hardens. Any colloidal scientists out there with a miracle
> >polymer in which we could soak our finished prints and get permanent
> >relief?
> >
> >Clay
>
>
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