physically getting hammers on shanks

[David Ilvedson]

Of course the hole is made when the hammer is bored but you do have to wipe off the glue.   I think the knurled shank makes sense if part of manufacturing....scoring the shank is equal to wiping the glue off the hammer...but through the hammer is the most logical for strike point changes in the treble...of course you do have a lot more cleaning up than wiping the glue away.

David Ilvedson, RPT
Pacifica, CA  94044


----- Original message ----------------------------------------
From: "John Delacour" <JD at Pianomaker.co.uk>
To: "Pianotech List" <pianotech at ptg.org>
Received: 12/20/2006 9:10:09 AM
Subject: Re: physically getting hammers on shanks


>At 9:53 am -0500 20/12/06, A440A at aol.com wrote:

>>JD writes:
>>
>><< I've never heard of or seen anyone do that.  The normal way to 
>>provide an  escape for the glue is to score a line down the top of 
>>the shank for 15mm or  so, but even that is not necessary if the 
>>knurling provides an escape route. >>
>>
>>      The "normal" way I have always seen is to have a pinhole 
>>through the  hammer core, directly above the boring, so that when 
>>fitting the hammer over wet glue, there is an escape vent for the 
>>air trapped by the hammer fit.

>Well perhaps that's the normal way in America but it never has been 
>in Europe.  First you have to make the hole and then you have to wipe 
>off the exuded glue and you're still left with a pinhole.  I don't 
>see the point.  With the European method the glue escapes and joins 
>the glue under the hammer which is going to stay there and that's 
>that.

>JD