[NHCOLL-L:2288] Re: Appropriate Crack filler

[Tony Irwin]

One reversible filler that might be used is a paste of glass microbeads in
25% acrylic resin (e.g. Paraloid) in acetone. A colleague of mine has used
this successfully on large vertebrate fossils. If anyone is interested, I
can let them have a reference to the technique (or even send them a copy of
the paper).
Tony Irwin
Natural History Department, Castle Museum Study Centre,
Shirehall, Market Avenue, Norwich NR1 3JQ, England.
Tel:+44 1603 493642. E-mail: tony.irwin at btinternet.com

-----Original Message-----
From: owner-nhcoll-l at lists.yale.edu
[mailto:owner-nhcoll-l at lists.yale.edu]On Behalf Of Steve Halford
Sent: 12 May 2004 22:19
To: callomon at acnatsci.org
Cc: nhcoll-l at lists.yale.edu; gnidovec at geology.ohio-state.edu;
bglotzhober at OHIOHISTORY.ORG
Subject: [NHCOLL-L:2286] Re: Appropriate Crack filler




On Wed, 12 May 2004 10:26:36 -0400 callomon at acnatsci.org wrote:
> Hi Bob,
>
> Something else you might consider is Cement Fondue. This is a powder that
> you mix with regular polyester resin (Fiberglass resin) to make a goop of
> whatever consistency you desire, from runny to a stiff paste. It sticks to

> most things, penetrates quite well (especially when thinned with Toluene)
> and hardens into a concrete-like substance that can be machined and
> polished. CF comes in many different shades, and looks exactly like rock
> when sanded and buffed. Worth a try, maybe. Regards, PC.

Shouldn't the preferred solution be reversible and non-invasive?  This
technique sounds awfully irreversible to me.

Steve (halford at sfu.ca)
Museum Technician,
Department of Biological Sciences
Simon Fraser University
Burnaby, B.C., Canada