Soundboard Installation & MC

[Jon Page]

---------------------- multipart/alternative attachment
At 10:44 PM 4/26/2002 -0700, you wrote:
>
>----- Original Message -----
>From: <mailto:Erwinspiano@AOL.COM>Erwinspiano@AOL.COM
>To: <mailto:pianotech@ptg.org>pianotech@ptg.org
>Sent: April 26, 2002 1:28 PM
>Subject: Re: Soundboard Installation & MC
>
>Ron wrote:
>     You're still talking about something like 0.003" rim spread from full 
> crown to flat.
>Dale wrote
> >>>>I'm not sure I agree with that. I'm about to press up an Stwy L board 
> and  after it's pressed and crowned I'll measure across the bottom from 
> each end of the longest rib and then I personally will sit or stand 
> on  the board on the floor and see how far the rib dimesion expands. Hmm 
> this might be hard to measure but I'm going to try anyway. Maybe I'l just 
> make a mark on the floor at each rib end and visually observe. Ever done 
> this? It seems to me that .003 figure would have to be greater for the 
> crown to completely collapse.
>
>Actually this sounds about right. I figured this out as well for one of 
>the Journal articles I did a couple of years back in which I wrote about 
>this very topic. The difference isn't much. Certainly not enough to 
>qualify the structure as a buttressed arch.
>
>I've no idea why this idea persists in the face of fairly easily provable 
>facts and reasonably clear logic. Good marketing ideas die hard, I guess.
>
>Del

Isn't it the intention of the CTR to prevent the rim creep? Also, couldn't 
a beveled rim have been bourne from proper woodworking techniques
of mating the surfaces prior to glueing and the PR spin came about as a 
brainstorm?



Regards,

Jon Page,   piano technician
Harwich Port, Cape Cod, Mass.
mailto:jonpage@attbi.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
---------------------- multipart/alternative attachment
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/41/fb/89/08/attachment.htm

---------------------- multipart/alternative attachment--