Spurlock Damper Design

[Farrell]

I think it is clear as mud. You are covering both sides of the damper board
with spring rail felt. That way it will look just like the sandwich
construction of the ones available from Schaff and on most pianos. Then you
use butt felt for the attachment/hinge between the felted bass damper board
and the damper block/dowel. If I am tracking right, then OK.

Spurlock does not mention covering the board with felt (other than the
hinge/connector felt on one side and the damper felts on the other side). I
assumed he does not do that. I was trying to figure out why manufactured
bass dampers have a covering felt on both sides of the damper board.
Appearance only? If you need more cushion, why not just put on thicker
damper felt or a thicker connector/hinge felt/cloth? What is the purpose of
the covering felt? Thanks.

Terry Farrell

----- Original Message -----
From: "Newton Hunt" <nhunt@optonline.net>
To: <pianotech@ptg.org>
Sent: Saturday, September 01, 2001 8:55 AM
Subject: Re: Spurlock Damper Design


> I am refering to the felt on both sides of the board.  FOr that I have
used
> spring rail felt but it has been pointeed out that that material is
"weak".  FOr
> the 'conector' I have used butt felt available in strips.
>
> If you glue material on both sides of a wide board the put a similar board
> underneith you can cut the width on the bandsaw and have really nice clean
> trimmings.  Lots of ways to do this, of course.
>
> Clear as mud?
>
> Newton