hammer travel

[Marcel Carey]

Ah!!

Thanks Ric, I guess I was lost with words. What you and David call
hammer travel, I was calling burning in shanks. But I do agree that we
use hammer travel to correctly determine if we have to burn shanks. 

This class I took was too long ago. There was surely some shank
traveling done before gluing the hammers, and this is the way I do it
too. But the two things are related. After papering the flanges, usually
I have to burn the shanks (which could be called hammer traveling). 

It only took me a good night of sleep to understand that I was just
playing with wording.

Marcel

> -----Message d'origine-----
> De : pianotech-bounces at ptg.org 
> [mailto:pianotech-bounces at ptg.org] De la part de Ric Brekne
> Envoyé : 20 septembre 2006 03:52
> À : pianotech at ptg.org
> Objet : hammer travel
> 
> 
> A good point Marcel.
> 
> At the Masters course in Hamamatsu we did a complete hammer change 
> including gluing hammers on the shanks.  Their method was pretty 
> classic,  remove all hammers but two end hammers for each 
> section then 
> travel these with a square. Then install new shanks,  space them 
> perfectly...then travel them perfectly.  After that the hammers were 
> glued on.  Traveling hammers as part of gluing was then just 
> a check to 
> insure the hammers were glued on with correct angles.
> 
> Cheers
> RicB
> 
> 
> --------
> Just to correct you David, it's not the hammer that we are 
> traveling, it's the shank and flange. This is easy to 
> understand if you just imagine the center pin to be a hinge. 
> When the hinges are not all aligned, the shanks are going to 
> come up all over the place.
>  
> Marcel
>