Re: Pigments for Tri-Color-Gum?

From: Christina Z. Anderson ^lt;zphoto@montana.net>
Date: 11/25/03-07:44:04 AM Z
Message-id: <008601c3b35a$b4a7a4e0$b008980c@your6bvpxyztoq>

Loris,
     Order the dry pigment powder from Daniel Smith in the USA. It will go
a loooong way. Frankly, I prefer the tube pigments because they are way less
messy, but I know Dave Rose uses powder as do others. I am such a mess and I
have white carpet now in this house (can you believe ANYONE would carpet a
house in white???)
     Don't worry about staining pigment. I've only had problems with that
when I have made the gum/pigment mix too thin (I could see it right away
when it happened; the pigment sunk into the paper immediately upon brushing
in little granulated dots--of course, this could also have been alleviated
by sizing but I don't). And the staining did not occur on the yellow layer
but in the highlights where there was no, or little, yellow layer.
     You will also notice, when you use those quinacridones, that a little
goes a long way. Maybe, in 4 teaspoons of gum/dichromate mix, let's say,
about two dabs of the top? Best is to paint a test square on a scrap piece
of paper before brushing on your print. Otherwise it can overpower and look
bubblegum pinkish.
Chris
PS I can actually email now, while waiting for my gums to "develop" in the
bathtub; I have 4 going at once--they better be done in 20 min because I
have to walk out the door to school. All exposures seem to be around a
minute with Sam's formula. I am doing venetian red over cad yellow and then
will finish with indigo tomorrow morning same time...a layer a morning with
my coffee; what a way to go.
----- Original Message -----
From: "Loris Medici" <lorism@tnn.net>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Tuesday, November 25, 2003 7:29 AM
Subject: RE: Pigments for Tri-Color-Gum?

>
> > -----Original Message-----
> > From: Loris Medici [mailto:lorism@tnn.net]
> > Sent: Monday, November 24, 2003 6:40 PM
> > To: alt-photo-process-l@sask.usask.ca
> > Subject: Pigments for Tri-Color-Gum?
> >
> > ...
> > Red/Magenta: Sam doesn't mention a specific red/magenta
> > color. So again looking to the color table I saw the 548
> > Quinacridone Red. It is an A
> > (II) rated permanent, transparent, non staining, series 3
> > color. What can you say about Quinacridone Red for
> > tri-color-gum printing?
> > ...
>
> I further searched in the web (and found a wonderful site called
> handprint - extensive information about watercolor pigments, papers
> ect.) thought that WN 502 (Permanent Rose - PV19 Quinacridone) would be
> a better alternative to WN 209 (Quinacridone Red - PR209 Quinacridone).
> This is a deeper/stronger red. My problem is that it is marked as a
> "staining pigment". So I would like to ask:
>
> Red will be the last layer on the tri-color-gum (as described by S.
> Wany). Below red, there will be cyanotype and yellow gum layers. So,
> should I care for the paper staining property of the red pigment? Will
> the yellow gum layer protect the paper support from the red staining?
> Or, can the yellow gum layer also be stained by the overprinted red
> layer?
>
> I know; you may say "test it and see it yourself" but the WN watercolor
> tubes are "special order" items where I live. So, they're extra
> expensive and delivery takes time also. As I don't want to waste both
> time and money I prefer to ask to you (people with knowledge and
> experience) first.
>
> Another question:
> From where I can order the pigments mentioned above in dry powder form?
> (PY153, PR209 or PV19) I think dry pigments would be a better
> alternative than tube pigments - more convenient, much more
> economical...
>
> Thanks in advance,
> Loris.
>
>
Received on Tue Nov 25 07:48:24 2003

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