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Re: [BKARTS] leather sources



>From " Bookbinding and the Conservation of Books" by Matt T. Roberts and Don
Etherington  (on http://palimpsest.stanford.edu/don/dt/dt0699.html):

"The major characteristics of chrome-tanned leather are its blue-green color
and absence of filling power, i.e., an empty tannage. Chrome-tanned leather
tends to be softer and stretchier than vegetable-tanned leather, and is very
stable in water. Unlike vegetable-tanned or alum-tawed skins, chrome-tanned
leather can withstand boiling water and has a shrinkage temperature higher
at times than 100° C.; however. it does not resist perspiration or organic
acids well and is difficult to emboss. In addition, it does not take gold
tooling well and is difficult to fabricate in such operations as turning-in,
etc. It is, on the other hand, a very durable leather."

This is not a complete answer to your question, rj, but it's a start.


-----Original Message-----
From: Book_Arts-L [mailto:BOOK_ARTS-L@xxxxxxxxxxxxxxxx] On Behalf Of rj
Sent: Tuesday, March 09, 2004 8:57 PM
To: BOOK_ARTS-L@xxxxxxxxxxxxxxxx
Subject: Re: leather sources

Actually it has never been entirely clear to me what the difference is
between
vegetable tanned and chrome tanned leather and, more specifically, why one
chooses one over the other. Can anyone explain the advantages and
disadvantages
of each tanning process as it effects covering books?
Thanks,
rj
--- chela <chela@xxxxxxxxxxxxxxxxxx> wrote:
> Dear RJ,
>
> One consideration that might give you more choices, is that if you
> are not using the leather to cover hardcover books and planning to do
> traditional finishing on it, you may not need vegetable tanned
> leather.  Chrome tanned comes in many colors, and is more stable over
> time than many vegetable tanned skins. It usually cheaper too. I have
> been very happy with chrome tanned for many types of limp bindings.
>
> chela
>
> "Date:    Sat, 6 Mar 2004 05:24:13 -0800
> From:    rj <h9022@xxxxxxxxx>
> Subject: Leather Source
>
> I have been looking for a source of thick leather (around 2.5 mm thick) to
> use
> for a wrap-around soft cover for a long-stitch book. I neither need nor
can
> afford to buy the entire skin. I did find a place in Texas that sells
> reasonable (to me) sizes but for vegetable tanned leather they only have
> natural colored skins and I would prefer some choice of color.
>
> Thanks for any help in locating a source.
>
> rj"
> --
> Consuela Metzger
> Lecturer - Book Conservation
> The University of Texas at Austin
> School of Information
> The Preservation/Conservation Studies Program
> 1 University Station D7000
> Austin, TX 78712-1276
> (512) 471-8293
> (512) 471-8285 (fax)
> chela@xxxxxxxxxxxxxxxxxx
>
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