From: Liam Lawless (liam.lawless@blueyonder.co.uk)
Date: 09/16/02-05:35:40 PM Z
George,
Further to the advice I gave the other evening, I've just had the same fault
on Arches Platine, having done what I suggested you do. At the moment,
three possibilities occur to me. The latest print was made on paper from a
batch that I've had a couple of years, whereas newer paper printed OK. Or
maybe penetration of the sensitiser was uneven owing to the fact that I
dried it too quickly. Or maybe it was only superficially dry, resulting in
local variation of sensitivity. More tests tonight, and I'll report back
tomorrow.
Liam
-----Original Message-----
From: Sandy King [mailto:sanking@clemson.edu]
Sent: 16 September 2002 14:45
To: alt-photo-process-l@sask.usask.ca
Subject: RE: Van Dyke Problem
George wrote:
>My normal coating operation involves coating it once, changing direction
and
>moving the foam brush over it again, then wringing the brush out, changing
>direction, then going over it again, then repeating this in the fourth
>direction, in an attempt to ensure an even coating. In the example I only
>brushed in two directions, since I was just putting together a test strip
to
>get a general exposure idea.
>
>I will attempt it again with your idea of moving over it with a dry brush
>following the initial application. You may be right that the paper could
be a
>problem, as I don't know of anything else that has changed in my routine.
>
>Cheers -
>
>george
My coating method is rather similar in that I making multiple passes
in order to even out the coating. This includes passes on the
horizontal, vertical and diagonal of the coating surface. However, I
coat with either a Hake brush or the Richeson "magic brush". Both are
much softer and abrade the paper less than common foam brushes.
Sandy King
>
>
>
>--- Liam Lawless <liam.lawless@blueyonder.co.uk> wrote:
>> George,
>>
>> Looks like a problem I've had, but with finer "pitting" that vaguely
>> resembles very coarse reticulation. It occurred for me on Arches
Aquarelle
>> hot-pressed paper, and I believe it is caused by uneven absorption of
the
>> sensitiser. The paper you're using may be partly to blame, but maybe
you're
>> also making it too wet. I got rid of it by slapping on the first coat
>> quickly (w/foam brush), then going over it with a dry brush, and then a
hair
>> dryer. It's not necessary to get it bone dry at this stage, just don't
>> allow the paper to stay too wet for too long. After the hair dryer, I
give
>> a second coat in the same way, and print when thoroughly dry.
>>
>> At the moment I'm using Arches Platine and have had no problems with it.
>> (But it prints a lot more contrasty than other papers.) In my
experience,
>> papers can vary a bit from batch to batch, so if the same paper has been
OK
>> for you before, maybe this batch isn't sized quite as well.
>>
>> Unless someone has another explanation...
>>
>>
>>
>> Liam
>>
>> -----Original Message-----
>> From: George L Smyth [mailto:glsmyth@yahoo.com]
>> Sent: 16 September 2002 02:02
>> To: alt-photo-process-l@sask.usask.ca
>> Subject: Van Dyke Problem
>>
>>
>> I've been doing Van Dyke for quite some time (well, on and off), and
have
>> come
>> across a real problem. I am getting some sort of pitting in my images,
and
>> I
>> can't seem to track down the source of the problem. An example of a
test
>> strip
>> showing this can be found at
>> http://mywebpages.comcast.net/hmpi/Temp/Pitting.jpg.
>>
>> I am using the standard chemical (the first formula found in Judy's
>> publication, volume 1), so there's nothing weird there. I apply with a
foan
>> brush. I am developing with water for about 3-4 minutes, fixing with a
5%
>> sodium thiosulfate solution for about 3 minutes, then washing (I've
tried
>> using
>> and not using PermaWash, without any difference). I am using Arches
>> Aquarelle,
>> which in the past has worked just fine.
>>
>> As far as I know, there has been no change in the water.
>>
>> Does this problem look familiar to anyone? I haven't had this problem
in
>> the
>> past and it first started happening about two months ago. I put
everything
>> down, as I didn't have time to do any alt process, but returning I am
seeing
>> the same problem.
>>
>> Any ideas would be greatly appreciated.
>>
>> Cheers -
>>
>> george
>>
>> =====
>> Handmade Photographic Images - http://GLSmyth.com
>> DRiP Investing - http://DRiPInvesting.org
>>
>> __________________________________________________
>> Do you Yahoo!?
>> Yahoo! News - Today's headlines
>> http://news.yahoo.com
>>
>>
>
>
>=====
>Handmade Photographic Images - http://GLSmyth.com
>DRiP Investing - http://DRiPInvesting.org
>
>__________________________________________________
>Do you Yahoo!?
>Yahoo! News - Today's headlines
>http://news.yahoo.com
--
This archive was generated by hypermail 2.1.5 : 10/01/02-03:47:09 PM Z CST
