From: Bob Kiss (bobkiss@caribsurf.com)
Date: 12/01/01-07:11:37 AM Z
DEAR LIST,
As Paul mentioned the boards should be 100% cotton. Don't be fooled by
the "acid free" label...it may still have lignin if it isn't a cotton, silk
or rice product. Lignin attacks photos.
The adhesive in tapes can contain sulfur compounds, some of which are
anathema to photographs of any form. Light Impressions in Rochester N.Y.
(among others) sells many archival products including 100% cotton archival
museum boards and archival tapes for hinging.
Hinging to the back of the window over matte (100% cotton museum) and
backing with a flat, un-attached, piece of the same material is the standard
museum practice. The major problem with dry mounting is that boards are
often damaged, eaten by insects, stained, etc. Unless you have used the
"releasable" dry mount tissue, it is VERY difficult to unmount.
I posted the following before but will repeat here; My acquaintance and
photo-archivist, Jose Orraca answered the "Should I dry mount?" question
with the ironic response, "Please do...then in a few years people will come
to me and pay me lots of money to remove and replace the degenerated
mattes!!!" From this I deduced that sticking (pun intended) to hinging is
the best bet...IMHO
CHEERS!
BOB KISS
This archive was generated by hypermail 2b30 : 01/02/02-04:47:33 PM Z CST