Re: Gum Tri-Color Yellow

From: Tom Ferguson ^lt;[email protected]>
Date: 06/03/04-12:56:58 PM Z
Message-id: <>

I've ordered some stronger yellow (Daniel Smith Permanent Yellow Deep
#133, pigment PY110). This seems to be Katharine's favorite tricolor
yellow pigment. It is very lightfast and transparent.

As I've moved farther and farther out of the LA area, getting supplies
is more of a "pain". My new rule is that if I can't get it local, I get
it mail order. It just takes hours in traffic to drive into Hollywood
and get a tube of paint! The local stores in Simi (far far LA suburb)
don't have Hansa, so I'll give this a try (next week) and report back.

Thanks to everyone for the help!

On Thursday, June 3, 2004, at 10:02 AM, Sam Wang wrote:

> Tom,
> I'm not sure if I can answer your question better than Chris has. The
> yellow I use is usually Hansa
> Yellow, and I almost never had to reprint it. However, I see nothing
> wrong if I had to reprint yellow
> either, unless it makes everything a little too light, which means
> you'd have to go back and print yet
> another color, at which time it all may start getting muddy and grainy
> and you tired and fed up - then it
> may be better to just start all over again.
> But don't throw the print in the trash. Many days or months later when
> you thought you would tear it up
> and use it for bookmarks you might discover what you originally
> considered awful was actually a lot
> more interesting than what you intended. So give it a rest. Give the
> print a chance to speak to you - not
> everything needs to be perfectly color balanced. It happened to me a
> number of times.
> Sam Wang
>> From: "Christina Z. Anderson" <>
>> Date: 2004/06/03 Thu PM 12:04:21 EDT
>> To:
>> Subject: Re: Gum Tri-Color Yellow
>> Tom,
>> Sam is the one to answer the cyano part of your question,
>> although I do
>> print it
>> fully--if I don't, then I have to print another layer of blue on top
>> of the
>> tricolor-not a bad thing.
>> I never have to reprint yellow so it could be you need more
>> yellow in
>> your mix, or, as Katharine says, the yellow is too light. If my
>> images err
>> on the side of imbalance, they are too yellow.
>> Good way to test is double the pigment in your yellow mix for
>> the next
>> print, with all other variables the same, and see if that doesn't
>> solve your
>> problem.
>> When I coat on my yellow coat, it is Ronald McDonald Yellow on
>> the
>> paper, even without dichromate. It looks horrible on top of the cyano
>> layer,
>> and when exposed I have this ugly greeny yellow print that looks like
>> it
>> won't resurrect, but then the magenta layer brings out all the colors
>> correctly.
>> Chris
>> ----- Original Message -----
>> From: "Tom Ferguson" <>
>> To: <>
>> Sent: Wednesday, June 02, 2004 8:00 PM
>> Subject: Gum Tri-Color Yellow
>>> As my new gum project progresses, I'd love some comments on the
>>> yellow
>>> layer of a tri-color gum. I'm basically trying Sam Wang's method
>>> (cyanotype, then yellow gum, then magenta gum from digital negs). see
>>> here:
>>> First question: Yellow layer. The "Process" looking yellow paints are
>>> giving me a normal DR and clear well. What they don't do is show the
>>> individual steps well, I get more of a gradient than steps. I settled
>>> on Rowney's "Permanent Yellow #664" (Quinophthalone Yellow PY138).
>>> The
>>> image looks OK, but Yellow is always the color I have to reprint to
>>> get
>>> the balance right. Is this normal, or am I using a poor paint choice.
>>> Second question: Is anyone using the full "D-Max" of the cyanotype? I
>>> find it too strong for the gum layers, and have adjusted the curve
>>> and
>>> print time to limit the D-Max. Normal, or am I missing something?
>>> Thanks
>>> --------------
>>> Tom Ferguson
Tom Ferguson
Received on Thu Jun 3 12:57:23 2004

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