RE: CYANO OBSERVATIONS

Makes me wonder if the brush didn't contain some chemical sizing that
interfered with the cyano......just my 2 cents worht :)
Kate
-----Original Message-----
From: BOB KISS [mailto:bobkiss@caribsurf.com]
Sent: Tuesday, 8 November 2005 2:12 a.m.
To: alt-photo-process-l@sask.usask.ca
Subject: RE: CYANO OBSERVATIONS

DEAR LORIS,
            I don't recall exactly how much sensitizer I used but I use the
same very small beaker filled to the bottom line for both the foam and hake
brushes. As mentioned in my original e-mail I used Arches Aquarelle HP.
                        CHEERS!
                                    BOB
 
 Please check my website: HYPERLINK
"http://www.bobkiss.com/"http://www.bobkiss.com/
 
-----Original Message-----
From: Loris Medici [mailto:loris_medici@mynet.com]
Sent: Monday, November 07, 2005 9:02 AM
To: alt-photo-process-l@sask.usask.ca
Subject: RE: CYANO OBSERVATIONS
 
 
Hi Bob,
 
Probably you brushed the emulsion so delicately (when compared to foam
brushes) that the paper couldn't absorbed enough coating solution (because
it wasn't forced into the paper) and the sensitizer crystallized on the
surface (classic cyanotype loves to do that), then washed away in the rinse
water leaving white spots in the print. How much sensitizer did you used on
what paper? (Not that I know many papers) I'm asking this because you may
also have used too much sensitizer (which gives exactly the same result as I
described above)... I use around 1.6ml (40 drops with the plastic pipettes I
use) sensitizer per 8x10" when coating with a brush (1ml when coating with a
rod).
 
BTW, how you apply the emulsion on the surface is a very very important
factor IME... We had mixed results with the same emulsion, same paper, same
negative, same lightsource and same brush in a workshop; it even depends on
who is brushing! ;)
 
Anyway, I'm happy that you have a method (coating with a foam brush) that
works for you perfectly.
 
Regards,
Loris.
 
-----Original Message-----
From: BOB KISS [mailto:bobkiss@caribsurf.com]
Sent: 07 Kasım 2005 Pazartesi 14:40
To: alt-photo-process-l@sask.usask.ca
Subject: CYANO OBSERVATIONS
DEAR LIST,
            Here are some observations about coating classic cyano. I have
always used a very soft foam brush and mixed 2 parts of A to 1 part of B.
Good D-max and nice tones (see "Blues in Paradise" on my website). I use
Arches Aquarelle hot press almost exclusively for cyano.
Just for kicks I tried coating using a new, unused, hake brush, same mix,
same paper, same negative, same everything. The three separate tests I did
all had a very grainy look. I then coated with the foam brush, again same
everything, and got a lovely smooth image as I always do with the foam
brush. All done on the same day.
I don't know enough about the process to suggest why but the results are
amazingly different and all factors except the brushes are the same. Go
figure!!!
Well, for cyanos, it will always be foam brushes for me!
                                    CHEERS!
                                                BOB
 
 Please check my website: HYPERLINK
"http://www.bobkiss.com/"http://www.bobkiss.com/
 
 
 

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