RE: buffered matte board??
Title: Message
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