Concerning soundboard compression ridges (resend)

[Delwin D Fandrich]

Keith McGavern wrote:

> This is being resent without the spelling errors that I so carelessly
> inserted.  My apologies to Steinway & Sons and the Pianotech list.
>
> Keith McGavern
>
> A Note About Soundboards:
>
> An important feature found in the Steinway is the design and installation
> of the soundboard.  This system is manufactured in such a way that it is
> constantly under compression, which prevents the soundboard from relaxing.
> It is for this reason that compression ridges may occur.  Soundboard
> compression is planned and desirable.  Compression ridges are a cosmetic
> indication that the soundboard has simply absorbed moisture from the
> atmosphere.
>
>  Steinway & Sons Technical Service Manual, page 6
>
> Keith A. McGavern
> kam544@ionet.net
> Registered Piano Technician
> Oklahoma Chapter 731
> Piano Technicians Guild
> USA

  --------------------------------------------

Thanks for the above. I had no idea compression ridges had now become a "feature." Interesting spin.

Kind of like calling broken legs a feature of skiing.

-- ddf