Key Bushing Glue

[Ron Nossaman]

At 11:12 AM 11/12/2001 -0500, you wrote:
>Elmer's Glue-All is a milk derived casine glue, which when cured, will
>be nearly impossible to remove without wood tear out because it is far
>stronger than the wood and it is not soluble by anything that is safe
>for humans or wood.  Cure time is 24 to 48 hours.  Set time is about two
>hours, depending upon how much water is in the glue.
>
>Casine was used as a base for paint for years and years.  Most modern
>strippers will NOT touch that paint.  It can pit it or haze it but
>removal is nearly impossible unless you get just the perfect solvent for
>casine glue/paint, of which I know nothing of right now.
>
>Hot hide glue has and is the glue of choice because it IS removable. 
>Casine glue will have to be removed by a router instead of heat and /or
>steam.
>
>Using casine glue is doing yourself a favor but not one for the
>customer, the piano or the next technician who has to try to remove
>those bushings safely in the future.
>
>		Newton


Something I dug up on the Net:

It's generally thought that Elmer's Glue & Glue All are PVA emulsions.
In its original formulation it was a casein glue, but about twenty
years ago the Borden Co. changed the formula to a PVA emulsion.Since then
there have been additional changes. Among the changes, they have tweaked
the binders and as a result, unlike other PVA emulsions that are soluble
only in PVA solvents after they are dried, the only solvent recommended by
Borden, Inc. for Elmer's Glue All is water. They claim that any other
solvent would only set the glue more.



http://www.elmers.com/msds/me375_bac.htm

For what it's worth.

Ron N