Re: plexglass face mounting
I don't believe it's the yellowing but something to do with how the
photograph is
glued to the sheet of plex. I heard (w/out full substantiation) that
Andreas Gursky's
set of large plex-mounted pieces had failed, or began to fade, or
something such
as that and they are being re-done to the cost of quite a few dollars
(euros). This
method of mounting originated in Stuttgart, Germany, I believe, and
is called the
Diasec process. Most ink-jet prints made w/the latest papers do not
mount well
on the plex. There is yet debate over the process but w/the caveat
being scratches
on the surface, I'
d think that being 'sealed' behind that plex might actually aid
longevity of the print.
Jack Fulton
On December2006, at 11:45 PM, Loris Medici wrote:
Under plexi, face up (image side sticks to plexiglass).
It's the first time that I hear plexiglass (more correctly: polymethyl
methacrylate - plexiglass is a registered trade name) isn't archival.
AFAIK, it is the material used in intraocular lenses (my mother has
this
kind of lenses inside her eyes because of her cataract problem) and
hard
contact lenses. I absolutely don't think they would put a material
that
clouds / yellows with time inside our eyes - would you? Plexiglass and
acrylic medium are essentially the same material and again AFAIK
acrylic
paint / medium is considered as being quite stable / achival
(depending
on pigment of course). Probably all this depends on quality / make /
impurities... I personally see high quality plexiglass as an archival
material.
Regards,
Loris.
-----Original Message-----
From: Judy Seigel [mailto:jseigel@panix.com]
Sent: 12 Aralők 2006 Salő 00:33
To: alt-photo-process-l@usask.ca
Subject: Re: plexglass face mounting
"Plexiglass face mounting" means mounting ON the plexi or UNDER the
plexi,
face up? Either way, I'm surprised there's been no mention of plexi
discoloring (clouding, yellowing) in time -- maybe not in 5 years, but
surely in 15 or 20. Unless there's a new plexi that's "archival"?
J.