Grand Rim Construction

[Paul]

Brian
You may get several replies on this. Here's my take on it :  instead of the
rim being bent with several layers of wood, saw cut are made almost through
at a right angle to the length of the rim piece. By the spacing and the
depth of these cuts, the rim piece becomes flexible so it can be formed
around a mold with very little stress. If I remember correctly, Bosey glues
this rim piece directly to the inner rim. After it is dried. they install a
face veneer to the inside of the rim piece to cover the saw cuts, fill the
ends of the saw cuts with wedges and add an edge banding to hide all the
joints. A lot of putzing to get a rim. They claim it is stress free and adds
to the singing tone of the piano.

Paul Chick
----- Original Message -----
From: Brian Trout <btrout@desupernet.net>
To: <pianotech@ptg.org>
Sent: Tuesday, May 02, 2000 1:55 PM
Subject: Re: Grand Rim Construction


> Bosendorfers are not very common in these parts.  I don't think I've ever
> seen one up close and personal.
>
> I just can't help but ask,...
>
> What's a "kerfed" rim?
>
> You know, the inquiring minds thing...
>
> Brian
>
>