Bob,
Based on what I’ve seen, 100% cotton board can go either
way. I generally use Strathmore Museum Board, which is buffered.
However, I’ve also seen 100% cotton board that is not buffered (or so the
item description said…).
Camden Hardy
camden[at]hardyphotography[dot]net
http://www.hardyphotography.net
From: BOB KISS
[mailto:bobkiss@caribsurf.com]
Sent: Tuesday, April 24, 2007 8:06 AM
To: alt-photo-process-l@usask.ca
Subject: RE: buffered matte board??
A question for the pros:
I use 100% cotton museum board. Is this buffered? I don’t
think so but I ask the pros.
CHEERS!
BOB
From: Loris Medici
[mailto:mail@loris.medici.name]
Sent: Tuesday, April 24, 2007 7:06 AM
To: alt-photo-process-l@usask.ca
Subject: RE: buffered matte board??
Second
this...
See a quotation from the paper "A Blueprint for Conserving
Cyanotypes" by Mike Ware:
"...The question
of buffered storage enclosures and mounts
It is now generally-accepted conservation practice that cyanotypes should not
be mounted on, or stored in alkaline-buffered materials. Calcium carbonate
clearly poses a threat to cyanotypes when in direct contact with the image; but
it has little ability to migrate through cellulose, so the dangers of chalk-buffered
enclosures can be overstated. It seems prudent, however, to continue the use of
unbuffered materials for the mounting or wrapping of cyanotypes, where direct
contact is involved..."
Full text URL (in Word format):
http://www.mikeware.co.uk/downloads/Conserving_Cyanotypes.doc
I
personally prefer to act in a prudent manner (just like Bob, Mike and many
others) - in place of being disgraced later by an unproven fact...
Regards,
Loris.
-----Original
Message-----
From: Robert W. Schramm [mailto:schrammrus@hotmail.com]
Sent: Tuesday, April 24, 2007 4:40 AM
To: alt-photo-process-l@usask.ca
Subject: RE: buffered matte board??
I must slightly disagree with Gawain Weaver's statement. I have actually
used mild alkaline solutions to bleach or lighten cyanotypes. A cyanotype
matted in a buffered board will be unaffected provided that the humidity is
low. I have seen cases where there has been some bleaching of the edges of a
cyanotype print where it has been in close proximity to a buffered matt
board probably as a result of being kept in a higher humidity environment. I
would not take the chance of using buffered board to matt any of my
cyanotype prints that I consider worth matting. I'm not sure about
chrysotype
but why gamble when unbufferd board doesn't cost any more.?
Bob Schramm