Re: yupo and gum

Hi Katherine the only thing i know about Yupo is that it is the substate
that Pete and the Temperaprinters use because of it's dimentional stability
and the fact that the Temperaprint emulsion sits on the surface,but i
understand watercolour artists are now using Yupo as a support,have trawl on
the web there is quite a lot of info.Dennis Klinker
----- Original Message -----
From: "Katharine Thayer" <kthayer@pacifier.com>
To: "alt photo" <alt-photo-process-l@sask.usask.ca>
Sent: Thursday, March 09, 2006 7:40 PM
Subject: yupo and gum

> Hi All,
> I've been away from the list for a while, but when I was visiting a
> friend in the city last week she handed me the New York Times article
> about the Steichen print that sold for 2.6million, so when I got home
> I checked the archives to be sure this sale had been noted here,
> which of course it was, and in the process of checking on that I
> found a couple things to comment on, including Gord's question about
> using yupo for gum.
>
> I was experimentig with yupo for gum for about a year, and reported
> some of those experiments here and showed some of the results, but I
> don't know if they are still out there on my site, because I can't
> remember what I named those pages.
>
> At any rate, my own experience was that gum doesn't print well on
> untreated yupo. It coated evenly enough, for me, with a brush, but it
> didn't stick to the yupo reliably in the development stage. At best
> the image stays on the paper, but runs and oozes, which can be an
> interesting effect if you want to play around with experimental and
> unpredictable results, but not very satisfactory if you don't; at
> worst, the image simply disintegrates and floats off the support as a
> result of lack of "tooth" to anchor it to the surface.
>
> At someone's suggestion, I tried sizing the yupo with hardened
> gelatin, and I posted the results of that experiment; the result was
> worse than with just plain yupo; the hardened gum coat went "shloop"
> off the yupo the minute it hit the water. As someone replying to
> Gord's question noted, I did for a while try sanding the yupo
> lightly, but I found that the coating soaked into the scratches made
> by the sandpaper and left scratch marks in the print, so that didn't
> prove satisfactory ultimately. After that, I tried putting some
> artificial tooth on the yupo, as I do with glass, by coating it with
> acrylic medium containing a very fine sand. This worked well for one
> coat, or sometimes two, but more coats didn't work well because the
> gum layered on top of each other tended to pull off the support for
> some reason. And you don't get real fine detail because the sand
> texture breaks up the image in the most detailed parts. At that
> point I abandoned the yupo and went back to paper, since I had found
> a very smooth paper that prints well (Arches bright white) which
> achieved the goal I was trying to achieve, and I went ahead and did
> the prints I wanted to print expressing the particular look I was
> after at that time.
> Katharine
Received on Thu Mar 9 14:22:17 2006