On 12 Jun 2005 10:56:49 -0700, [email protected] wrote:
>What is the best finish to use for a display box that will contain a
>very old book - an archival finish. I am concerned about off-gassing
>affecting the fragile paper.
What's "very old" here ? What's the binding style, the materials and
the type of paper ?
What's "display" ? Open or closed ? How long is the book going to be
in here ? Is this a transport or archival non-display case ?
What's on the page ? Illustrations ? Any light-sensitivity issues ?
How big is this book ? How heavy ? How strong is the binding in
relation to the weight of the textblock ?
In general, I would suggest two broad (and rather crude) guidelines:
- Don't do this. Books are best stored by shelving them, not
displaying them. Even when done to "best practice", a display of a
book, especially open, is poorer for storage than quite casual shelving.
In some cases this could be very damaging.
If you have to display, rotate. Change the book, or at least change the
open page.
- Any reasonable sort of display box is OK. Books aren't fussy. Books
and their bindings already contain quite enough nastiness on their own
account - not many cases will add to this!
Let's assume you want a glass-topped display box with a cushion in it.
Hopefully this is for short-term exhibition of a one-off, or else a
rotating display.
Build the case from a stable non-reactive hardwood such as ash, beech,
hornbeam or maple. If it has to be made of something else, line it with
an inner box of lime (linden/basswood) or paulownia. Avoid oak,
chestnut, walnut or tropicals. Avoid softwoods. Avoid dark timbers (in
case of flood - most will stain). Don't use man-made boards.
Assemble the box with PVA glue (if glued). Don't use hide glue, don't
use PU glue. Make sure the glue is well cured before using the box.
Consider ventilation openings. This depends on your gallery temperatures
/ humidities, and the likely display internal temperatures. Try
instrumenting a test cabinet beforehand and measuring the env.
conditions you get.
Make the lid so that it opens for easy access. Fit a securely locking
stay or retainer to hold it open.
Glaze the lid with something sufficiently strong to support small
children (possibly whilst dancing in wellingtons - I've seen it
happen!). Consider anti-breakage film on the inside of glass, or at
least tempered glass. Use laminated if there's a value issue (against
either theft or breakage).
You have a choice of glass or Perspex (Lucite / acrylic). Glass is
generally stronger, cheaper and scratch-resistant, Perspex can reduce UV
damage, especially if you use a UV-absorbing grade. The right choice
depends on the cabinet size, contents and display conditions.
Finish the inner surface of the box with plain white or grey paint. Use
an acrylic (is this "latex" in the USA?) paint and make sure it's well
cured before use. If you need a clear finish, use shellac. Don't use any
oil or varnish finishes.
If you need an inner substrate, use normal conservation materials like
foamboard or mounting board (acid buffered, as usual). If you use fabric
drapes, make them plain unreactive cotton or linen. Foamboard can also
be used for internal sunshades (but watch for reflections, or the sun
moving during the day).
The book cushion to support the book should be the usual cushion
materials - foamboard is easiest. Make the cushion to fit the book,
particularly the spine width and angle. Don't fasten cushions down
because they need to be interchanged for different books -- a badly
fitting cushion damages bindings. Don't use man-made timber such as MDF
for making book cushions - use stable softwoods if you must, and cover
the top with mounting board.
If you need non-reactive interlayers, use polyester (Mylar) sheet.
Fit the usual level of thermometers, hygrometers, lightmeters and
bug-traps (especially bug traps). Don't dehumidify - books don't like
being drier than 45%, which is very easily obtained in an illuminated
display and is very damaging to any book that's on display with the
binding open.
Worry (a lot) about illumination levels on an open book, particularly
about UV. Don't illuminate the case internally - if you do (only for the
biggest of displays) then have a conservator / lighting engineer look at
the design first. Remember that 250 lux (approx. domestic interior) is
the limit for most books and that sensitive ones should be limited to 50
lux (inside a cinema). UV light should be < 75µw/lm and ideally
<30µw/lm.
You really must avoid sunlight on permanently displayed books !
For shelf storage boxes, just make up a standard storage case or "phase
box" from buffered grey board and pasted tape. Any bookbinding or
conservation text will describe these.
Some good web resources:
Excellent conservation intro primer
http://amol.org.au/recollections/
Journal of the American Institute for Conservation
(trade mag with good searchable archive)
http://aic.stanford.edu/jaic/
Conservation OnLine / the Palimpsest lists
http://palimpsest.stanford.edu/
Try www.refinishwizard.com and www.homesteadfinishing.com for
starters.
On 12 Jun 2005 10:56:49 -0700, [email protected] wrote:
>What is the best finish to use for a display box that will contain a
>very old book - an archival finish. I am concerned about off-gassing
>affecting the fragile
>paper.
>Melanie
On 14 Jun 2005 20:23:39 -0700, [email protected] wrote:
>Thanks for your in-depth response.
You're welcome.
>The box is for a very old family bible - probably close to 100 years
>old.
Nice to hear you're looking after it.
I did a flat clearance a while ago - deceased old lady neighbour, whose
children showed up, collected the new TV and ran off. They left the
photo albums and the bible (1870s) behind -- just not interested. How
can anyone do that ?