Re: gum redevelopment

From: Giovanni Di Mase ^lt;[email protected]>
Date: 07/14/04-01:32:10 PM Z
Message-id: <>

What I mean is that with the hot water the gum is subject to a major heat
to dissolve and it does dissolve but not as much as we like in many stubborn
cases or overexposed cases.
When you hang the print there is the physical water weigh on the paper
fibers also trying to break away the molecules of gum and pigment and some
of them are already too weak.
Don't let it dry !
Put them back on hot water and you will see what I mean melting like
"butter", obviously it has some limitations and I am working on them too.
None of this is written on any book and obviously I call it Giovanni process
I hope you guys find it helpful.
----- Original Message -----
From: <>
To: <>
Sent: Tuesday, July 13, 2004 8:23 PM
Subject: Re: gum redevelopment

> Somebody may want to try and comment to us:
> This is what I do.
> By chance I found that the best way to redo or adjust a pigment it's first
> to try it with hot water (as much as possible).
> Once you feel that there is no more bleeding and that's it then take the
> image to hang and dry.
> Do not let it dry completely (give it an hour or so) and get it back with
> humidity or damp.
> Then put it back on hot water.
> It will start melting like butter but be careful of too much.
> Try first and then we will talk about why and how.
> Giovanni
> ----- Original Message -----
> To: <>
> Sent: Monday, July 12, 2004 11:39 PM
> Subject: Re: gum redevelopment
> >
> >
> > On Mon, 12 Jul 2004, Katharine Thayer wrote:
> >
> > > My position on "redevelopment" is that if the gum is properly hardened
> > > it shouldn't be soluble once dry; to say the same thing another way,
> > > it IS soluble when dry, it hasn't been properly hardened. I live in a
> > > damp climate and th idea of prints made of soluble gum makes me
> > > but perhaps that's just me.
> >
> >
> > I think this is a false analogy. The mechanism is a very long soak in
> > water. The gum isn't *soluble* and the long soak doesn't make it
> > but softens it so that it becomes *abradable* -- in the same way that
> > tempera or watercolor paint on a perfectly fine and archival painting
> > could be softened and become abradable after a long soak in water.
> >
> > Judy
> >
Received on Wed Jul 14 13:34:16 2004

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