U of S | Mailing List Archive | alt-photo-process-l | Re: what about pva sizing?

Re: what about pva sizing?

Jim did mention that it gives a slight sheen...he uses common Canson Montval, I believe

I'd like to try it on Fabriano EW or maybe Arches Cover...or even the unsized Arches 88.


----- Original Message ----- From: "Katharine Thayer" <kthayer@pacifier.com>
To: <alt-photo-process-l@usask.ca>
Sent: Monday, March 16, 2009 11:27 AM
Subject: Re: what about pva sizing?

I don't know about pt/pd or other processes, but I've been trying it
for gum and so far not pleased with the results. Apparently I don't
have Jim's magic touch, or something. I believe Jim uses it at full
strength (if I have that wrong, please correct) but at full strength
I get a grainy image (will scan example later if I remember to get it
when I go downstairs) that isn't acceptable to me; I also dislike the
high shine. Have also tried it at half strength and 1/3 strength but
didn't like those either, I forget now why. Would need to go down
and look at test prints to refresh my memory. All I know is, none of
my experiments with Gamblin PVA sizing for gum were satisfactory to
me, and I've gone back to gelatin and glyoxal. This was on Arches
bright white, a very hard, crisp-surfaced paper; I suspect it may
work better on a more absorbent paper.

On Mar 16, 2009, at 9:05 AM, Paul Viapiano wrote:

Hi all...

What about using Gamblin PVA size?

I know that Jim Larimer likes to use it for gums...has anyone else used it for pt/pd or other processes?

I'd like to buy a bottle today and try it out...


----- Original Message ----- From: "Alberto Novo" <alt.list@albertonovo.it>
To: <alt-photo-process-l@usask.ca>
Sent: Monday, March 16, 2009 9:29 AM
Subject: Re: agar sizing


did you note if it still has adhesive power round 40 ?         8  - )

I think you mean if this happens after a warm soaking, like for resinotype. I don't believe agar swells like gelatin, because you need to rise the temperature up to 90C to dissolve it. However, I will check these days.

is it yellowish or it has other "nuances"?

I have a yellowish agar, given me by a biologist, and a perfectly white (edible) agar bought in a grocery. But also the yellowish one, once brushed on the paper and air dried, is only barely visible but for the shine of the sheet.