Strips or wedges

[Newton Hunt]

The only place you can make this comprison is in the treble breaks and what occurs
there is more change caused by changes in the humidity content of the board and
lack of equal pressure by the strings scross the brace space.

                    Newton

Michael Jorgensen wrote:

> Plate brace compression? Really?  When I'm tuning with the RCT using the
> same tuning file as last time, where the piano has gone slightly flat,
> I'm finding that the pitch is most flat next to the braces, and changed
> little in the areas between. This runs counter to the test results given
> below! (unless pitch raising/lowering arouses a different reaction than
> normal tuning change over time and weather change does.)  This leads me
> to suspect it's the empty spot on the bridge causing the change. Typical
> change from six weeks ago--  Dead on in the middle of sections 2-3 cents
> flat next to braces, and ofcourse drasticly off at bass break.)
> Bridgemakers!, What is the proper term for that empty spot at section
> breaks?
>
> -Mike Jorgensen RPT --who tunes all CMU pianos every six to eight weeks.