Soundboard Clamping for Downbearing

[Delwin D Fandrich]

----- Original Message -----
From: "Ron Nossaman" <RNossaman@cox.net>
To: "Pianotech" <pianotech@ptg.org>
Sent: December 20, 2002 3:34 PM
Subject: Re: Soundboard Clamping for Downbearing


>
>
> Which brings up a question. We have a few folks on the list here that have
> or have had a thing or two to do with the manufacturing of pianos. Can any
> of you guys tell me what glues are used in soundboard assembly by the
> manufacturers you work(ed) for?
>


Phenol formaldehyde with various extenders and fillers is common. Heat
setting, it kicks over at about 180º - 190º F. Cures very brittle & cleans
up easily. No creep. Very poor gap filler though this can be improved with
various fillers. Long open life as long as it is not hot.

Del