Removing Bridges

[Peter KESTENS]

Terry, you can use denatured alcohol or vinegar to soften the glue joints.
PETER
't MUZIEKINSTRUMENTENATELIER
PETER KESTENS
BELGIUM
KESTENS.P@DEBCOM.BE
-----Oorspronkelijk bericht-----
Van: Jim.Shari@ruralnet1.com <Jim.Shari@ruralnet1.com>
Aan: pianotech@ptg.org <pianotech@ptg.org>
Datum: donderdag 8 januari 1998 13:32
Onderwerp: Re: Removing Bridges


>PI>At 21:16 1/7/98 CDT, you wrote:
>
>PI>>Hi Terry,
>PI>>
>PI>>Remove the screws, drill out the dowels, and hit the bridge with a
>PI>>rubber mallet.  It should pop off.
>PI>>
>PI>>Jim.
>
>PI>Thanks Jim. That's basically what I thought. I think I will obtain some
>PI>acetic acid, build a dam around the bridge, pour the acid on and let it
sit
>PI>awhile to soften the glue first. The trick may be getting it back on
>PI>again....putting in new dowels etc. Do you suppose I should place some
>PI>wedges between the ribs and back posts before using the mallet?
>
>PI>Terry
>
>Terry,
>
>The acetic acid treatment is ok, and supporting the board is also fine,
>but our experience has been that most of these old bridges were glued
>with hide glue, and it's not too difficult to get them off.  Just be
>certain that all the screws and dowels are out.  As far as placement
>goes, we drill 2 holes through the back of the board and into the bridge
>before it is removed.   These holes are the size of finish nails that we
>use for guide pins.
>
>Jim
>