capo work

[David Ilvedson]

The scraping idea is intriguing...although I've never found cast iron hard to file...

David Ilvedson, RPT
Pacifica, CA  94044

----- Original message ----------------------------------------
From: "John Delacour" <JD at Pianomaker.co.uk>
To: "Pianotech List" <pianotech at ptg.org>
Received: 12/9/2007 1:51:25 PM
Subject: RE: capo work


>At 14:56 -0600 9/12/07, Alan Barnard wrote:

>>Heavy cloth-backed emery paper is nice because it conforms to the 
>>contour so well yet takes off the rough stuff.

>Yes, or 3M fre-cut even better.  But if, as I think, David is 
>planning to re-contour the bridge, then I would have a grinding shop 
>make up a tool in cobalt steel to _scrape_ or "scratch" the new 
>radius first with the tool held in a home-made scratch stock.  It 
>would be very slow and inconvenient to to this with files or 
>abrasives.

>JD