I didn't know these were new hammers....explain how one get the correct bore distance from samples? I was under the impression you needed string heights and center pin height? How does an old hammer give you the correct blow distance? David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: "David Love" <davidlovepianos at comcast.net> To: "Pianotech List" <pianotech at ptg.org> Received: 10/23/2007 7:56:42 PM Subject: RE: Hammer bore distance update >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
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