[CAUT] Glues used in instruments

[Fred Sturm]

I'll ditto Ed on the creeping aliphatic phenomenon. I have seen it on
several Hubbard and Zuckermann kit instruments. The glue joint didn't "fail"
but it sure crept. Soundboard creeping into the gap for the jack guides is
one common symptom, with the result that the guides are "frozen" and won't
shift. Also, the hitchpin rail, which is often just glued on top of the
soundboard on some instruments, moves away from the rim, leaving a marked
gap which increases with time. Usually it is possible to live with the
results one way or another.
Regards,
Fred Sturm
University of New Mexico


On 11/27/07 4:38 PM, "Ed  Sutton" <ed440 at mindspring.com> wrote:

> Poletti makes very careful reproductions or late 18th and early 19th century
> instruments.
> I have seen what appears to be creeping aliphatic resin glue problems in
> lutes and in harpsichords and fortepianos constructed from Hubbard and
> Zuckerman kits which used yellow glue.
> Ed S.
> 
> 
> ----- Original Message -----
> From: "Richard Brekne" <ricb at pianostemmer.no>
> To: <pianotech at ptg.org>; <caut at ptg.org>
> Sent: Tuesday, November 27, 2007 3:58 PM
> Subject: [CAUT] Glues used in instruments
> 
> 
>> Hi Folks
>> 
>> Reading in one of Anne Ackers i found a reference to the website of one
>> Paul Poletti who has a side dedicated to glue. Please look over the
>> following and provide comment.
>> 
>> Thanks
>> RicB
>> 
>> http://www.polettipiano.com/Pages/gluengpaul.html
>> 
> 
>