[alt-photo] Re: Multi coat Gum -3rd+ coats tends to wash off

[pfriedrichsen at sympatico.ca]

John,

I reversed the layers by moving the cyan to the first layer rather 
than the last. Funny that this allowed the top layer (now magenta) to 
adhere well. There was a post that I found in the list archives of 
Sept 2008 by Keith Gerling who suggested printing cyan first.

Now having said all of this, I still do believe that it shouldn't 
matter which color goes first in terms of adhesion so I suspect that 
the amount of dried gum left after development  must be in excess. I 
will do some adjustments by diluting the gum concentration, and if 
need be, the pigment load as well. Your suggestion of going over it 
with a dry foam roller may also be worth a try however I do find that 
the slightest pressure on the paper from a foam roller increases 
staining, a tleast that was my experience when I gave it a go some time ago.

Peter Friedrichsen

At 05:39 AM 02/24/2010, you wrote:
>Hi Peter,
>
>Yes, there are some that don't size but you may get staining issues. Also,
>when stretching and developing you may lose some of the manufacturers size.
>It is gum compatible because it has a good wet strength and is dimensionally
>stable.
>
>I use FAEW HP, sized with gelatine and have put down 7 or 8 layers on one
>image. I'm with Loris here on the thickness of your layers. I find I can get
>a very thin layer by coating with a foam brush and then using a dry foam
>roller to even out the coating.
>
>J.
>
>
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