From: Pam Niedermayer (pam@pinehill.com)
Date: 06/27/02-07:31:29 AM Z
If it's really hide glue, it should come apart with the application of
warm/hot water. That's the way it works in woodworking.
Pam
> John Cremati wrote:
>
> Hi,
> I have a unusual problem.... I have a antique, possibly
> historic ,
> hand painted stained glass window that was given to a associate of
> mine
> for restoration.... It is attributed to Rembrandt and is absolutely
> magnificent!...In restoring a window such as this no broken glass is
> replaced , it is just sandwiched between two clear pieces of glass
> and just
> left in tact...
> The problem is that in a previous 19 century restoration attempt
> the
> restorer applied either gelatin or animal hide glue to the broken
> glass and
> then applied or glued a clear piece of glass to this...This animal
> glue has since
> partially separated from the glass and is quit distracting leaving
> small
> fragments of glue adhering to both the clear cover glass and the
> painted
> original glass. There is large area where the glue is solidly
> attached to
> both surfaces with no fragments ............... This glue needs to be
> removed with out
> affecting the glass painting...... I am afraid to try anything with
> heat as
> a "glue chipping effect" may occur and it seems that the glue or
> gelatin may have become
> partially insoluble possibly due to a reaction with the glass or glass
> paint
> /pigment which is fired on and years of exposure to sunlight.... Any
> suggestions on its removal or softening this glue (or possibly just
> gelatin
> material)? I would be happy to forward a picture of this window off
> list
> on request ......
> John Cremati
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