Hammer bore distance update

[David Love]

Paul's idea is better.  Call Lloyd at Renner and talk to him about the
problem.  If it's their mistake I'm sure they will redo it.  

David Love
davidlovepianos at comcast.net 
www.davidlovepianos.com

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of David Love
Sent: Tuesday, October 23, 2007 7:49 PM
To: 'Pianotech List'
Subject: RE: Hammer bore distance update

Sometimes when you send samples they add a few mm's to compensate for
estimated wear.  Sometimes they get it wrong.  Better to measure and send
specific dimensions.  

A little tricky to redrill an entire set when the hammers are tapered and
tailed but it can be done.  You will need a boring jig.  Take them off, plug
them with dowels and proceed slowly and carefully.  

David Love
davidlovepianos at comcast.net 
www.davidlovepianos.com

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Cal Munson
Sent: Tuesday, October 23, 2007 7:03 PM
To: pianotech at ptg.org
Subject: Hammer bore distance update

Thanks List for your responses.  The piano is a Steinway A and the  
bore distance, I am told should be 46 mm
My own 'A' has an ideal bore distance of roughly 44 with some  
sections at 44.5 and others at 43.5

The hammers in question, Renner Blues, have been drilled with a bore  
distance of 49 mm (center of hole to striking surface of hammer) so  
they are 5 mm off.   The old hammers with shanks were sent as samples  
so it is a mystery........ However,  I don't see a downside to having  
the hole filled and then re-drilling.   But I have not done it  
before... Anyone?

Cal Munson