[CAUT] a picture for you

[Ted Sambell]

----- Original Message -----
From: Ted Sambell
To: College and University Technicians
Sent: Tuesday, July 11, 2006 7:39 PM
Subject: a picture for you

It is almost impossible to file the strike surface of a hammer truly  
square across by filing each hammer individually. Don Mannino  
advocates that one finish by lightly gang filing with very fine paper  
on a wide paddle. To do this, support a group of hammers on a piece  
of board and just go over the strike points. I assume this is a  
standard Kawai practise.This eliminates a great deal of hammer  
fitting. It does not make sense that agraffe holes are usually out of  
level; after all, they are made in large quantities on automatic  
machines and look pretty consistent. One should make certain that the  
hammers are twisted straight and filed square as stated. The attached  
photo is of a finishing hammer file designed by Chris Gregg. He has  
made them and sold them through Joe Goss (Mother Goose Tools). They  
do a beautiful job and also reduce the amount of string lifting  
significantly. Freehand filing simply cannot match the results . I  
usually work with two, one with 120 grit and the second with 1500. If  
you have access to a drill press and a 2-1/2" Forstner bit, these are  
simple to make.

Ted Sambell

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