[Table of Contents] [Search]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[BKARTS] alum and paste

                          MDE - Innovation 2004
             An International Bookbinding Design Competition
                    [No Binding Experience Required]
                  Sponsored by Meister der Einbandkunst
                     60,000 ? (Euro) in total prizes

              Full information at <http://www.mde2004.org/>

Hi Richard... I understand your frustration with paste going off so quickly.
However, it is not a good idea to add a preservative to your paste; all have
real or potentially deleterious effects on the work. Alum will not only lower
the pH of your paste but also produce a more brittle film even with buffering.
Thymol has been shown to alter the color of some papers and pigments as it off
I am assuming that you are working with cooked starch paste and so I'd like
to suggest a few alternatives to a preservative. First of course is to make
smaller batches more often; I realize that this may not be a useful solution for
those of us who work an irregular schedule in our shops. Have you ever made
your paste in a microwave? It is very fast and difficult to get wrong. I make
mine on a laboratory stirrer hotplate, you can pick them up cheap on eBay. And
then there is the rice cooker; it will make your paste while you sleep. There
is the precooked instant paste; very expensive for large batches made often but
quite reasonable for shorter work periods and small batches.
It is so difficult trying to insure that we use the best materials and
methods in our work that it strikes me as a false economy to scrimp on something so
important and basic as a good fresh paste. After all, the best is barely good

        See the Book_Arts-L FAQ at: <http://www.philobiblon.com>

     *Postings may not be re-printed in any form without the express
     consent of the author - Please respect their contributions & ©*

        Archive maintained and suppported by Conservation OnLine

[Subject index] [Index for current month] [Table of Contents] [Search]