Re: Cyanotype woes

[Keith Gerling <keith.gerling@gmail.com>]

I'm one of those people that always insisted upon using CMYK.

On Wed, Feb 27, 2008 at 10:08 AM, Christina Z. Anderson
<zphoto@montana.net> wrote:
> Keith said:
>   but I with red and yellow gum layers I
>  >> was getting some of the deepest blacks I've ever seen in any process.
>
>
>  PS this, above, along with sharpness of the layer, is the best reason to use
>  a cyano underlayer--the resulting black in the print which eliminates the
>  necessity to print a K layer as some suggest must happen.  However, this
>  also is the reason that some don't like the cyano underlayer--it is too
>  dark.  Hence I actually have switched from a 2:1 A:B ratio that I always
>  used to use to a 1:1, so that I have essentially halved my FAC proportion to
>  what it once was.
>  Chris
>
>
>  1) use a more
>  >> concentrated solution of FAC
>
>  YES
>
>
>  2) dump vinegar in the gum development
>  >> water
>
>  Try this--it'll tell you if alkalinity is the issue
>
>
>  3) finish the project in 6 years when the Cyanotype solutions
>  >> have properly aged.
>
>  Now a question for you and others:  I have never aged my cyano--I'm too
>  impatient, so I just mix n' go.  I do this with VDB also, tho they say age
>  it.  Do you have data on this--is it a good thing?
>  Chris
>
>
>