[Nhcoll-l] Skeletons assembly

Sat Jan 15 13:11:24 EST 2022

Hi all,

Thank you very much for your recommendations and help. Seems that Paraloid B72 is the main tool for this subject.
All references are wellcome. Specially, I found interesting a document that Chris Taker sent me to my personal email. I share this document in case it may be of interest to other colleagues. Thanks Chris!

Best wishes

Sergio

De: Fox, Marilyn <marilyn.fox at yale.edu>
Fecha: viernes, 14 de enero de 2022, 22:18
Para: Sergio Montagud <sergio.montagud at gmail.com>
Asunto: Re: [Nhcoll-l] Skeletons assembly
Hi, Sergio, although these papers are focused on fossils, the information applies to both Recent and fossil specimens.

I hope they are of help, Marilyn

Marilyn Fox (marilyn.fox at yale.edu<mailto:marilyn.fox at yale.edu>)
Chief Preparator, Division of Vertebrate Paleontology
Yale Peabody Museum of Natural History
Collections Study Center
900 West Campus Drive, Room K224
West Haven CT 06516

(mailing address)
P O Box 208118
New Haven CT USA 06520-8118

(http://www.peabody.yale.edu<http://www.peabody.yale.edu/>)
1-203-432-3747

From: Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> on behalf of "Callomon,Paul" <prc44 at drexel.edu>
Date: Friday, January 14, 2022 at 3:49 PM
To: "Anderson, Gretchen" <AndersonG at CarnegieMNH.Org>, Mariana Di Giacomo <maru.digi at gmail.com>, Sergio Montagud <sergio.montagud at gmail.com>
Cc: NHCOLL-new <nhcoll-l at mailman.yale.edu>
Subject: Re: [Nhcoll-l] Skeletons assembly

Another nice quality of Paraloid B-72 is that you can mix it yourself from dry granules (we use acetone, though other solvents work too) so you can make a thin solution to act as a penetrating primer, then a thicker one to be the actual adhesive between the primed surfaces. If you have a clean break in something like bone, however, you can use a very thin solution as the adhesive and get an almost undetectable bond layer.
I agree that PVA is not good for museum specimen work; apart from anything else, the A stands for Acetate, and it gives off acetic acid as it cures. It’s great for bonding wood, though.

Paul Callomon
Collection Manager, Malacology and General Invertebrates
________________________________
Academy of Natural Sciences of Drexel University
1900 Benjamin Franklin Parkway, Philadelphia PA 19103-1195, USA
prc44 at drexel.edu<mailto:prc44 at drexel.edu> Tel 215-405-5096 - Fax 215-299-1170

From: Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> On Behalf Of Anderson, Gretchen
Sent: Friday, January 14, 2022 2:55 PM
To: Mariana Di Giacomo <maru.digi at gmail.com>; Sergio Montagud <sergio.montagud at gmail.com>
Cc: NHCOLL-new <nhcoll-l at mailman.yale.edu>
Subject: Re: [Nhcoll-l] Skeletons assembly

External.
Dear Sergio,

I fully agree with Mariana’s recommendation of Paraloid B-72.  As she notes cyanoacrylates and epoxies are too strong, with a tendency to discolor.  Epoxies are difficult to reverse and remove. PVA’s (like white glue) are designed for paper and wood and will expand and contract with fluctuations in relative humidity.  They have what is called cold flow, which means that they will shift as the environment changes.

I am available to chat as well.  But Mariana’s advice to find a local conservator who can advise you on local options is excellent.

Good Luck!
Gretchen Anderson
Conservator,
Carnegie Museum of Natural History

Sent from Mail<https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgo.microsoft.com%2Ffwlink%2F%3FLinkId%3D550986&data=04%7C01%7Cmf235%40connect.yale.edu%7Cd47b95249ed64d2acd0d08d9d79f62e1%7Cdd8cbebb21394df8b4114e3e87abeb5c%7C0%7C0%7C637777901840590232%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&sdata=njSuOP1pn5DPJMhihNOznGiYALoXa8SdYDY6uoHpYcw%3D&reserved=0> for Windows

From: Mariana Di Giacomo<mailto:maru.digi at gmail.com>
Sent: Friday, January 14, 2022 11:00 AM
To: Sergio Montagud<mailto:sergio.montagud at gmail.com>
Cc: NHCOLL-new<mailto:nhcoll-l at mailman.yale.edu>
Subject: Re: [Nhcoll-l] Skeletons assembly

Dear Sergio,

I would recommend the use of a museum-grade (also referred to as archival quality) adhesive for any museum related purposes. For this reason, Paraloid B72 is an excellent choice. There are others out there and we can continue to chat if you wish, but my other recommendation would be to speak to a local conservator who can guide you to find the best one(s) in your area.

Adhesives such as cyanoacrylates and epoxies are too strong for recent bone and can cause damage in the long run.

Let me know if you want to chat further.
Saludos,
Mariana

On Fri, Jan 14, 2022, 06:43 Sergio Montagud <sergio.montagud at gmail.com<mailto:sergio.montagud at gmail.com>> wrote:

Dear all,

We are looking the best type of glue to use for assembly skeletons and standarize a protocol. Many of our specimens come from students' work, who have used mostly the Loctite glue (instant glue) for small animals like birds, reptiles, rodents and bats. Other animals like large mammals or prey raptors has been mounted with Epoxi glue, that mixed two components and remains very fixed. But this mix is dark color. Other pieces in the paleontology collection are join with Paraloid with high concentration.

What cain of glue do you recommended for setting skeletons and join bones as principal protocol?

Is there any well-documented work or reference where all this information is indicated?

Thanks in advance!

Sergio

--
********************************
Sergio Montagud Alario
Museu [UV] Història Natural
Universitat de València
e-mail: sergio.montagud at uv.es<mailto:sergio.montagud at uv.es>
********************************

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