If you can reuse the string you will know immediately when brought up to tension. I've just about always been able to reuse the string. David Ilvedson ----- Original message ---------------------------------------- From: "William R. Monroe" <pianotech@a440piano.net> To: <robert.scott@tunelab-world.com>, Pianotech <pianotech@ptg.org> Received: Mon, 28 Feb 2005 07:58:17 -0600 Subject: Re: My First Agraffe Repair >Robert, >I'd be cautious with using the old strings. I know others have said go for >it, but from what you described, straightening out the old coil could >greatly fatigue the wire throughout that length, leading to broken strings. >Not saying don't do it, just saying in my experience, I've been bitten more >than once when I've had to bend the wire more than once, whether with a >splice or otherwise. It just makes me nervous. >William R. Monroe >----- Original Message ----- >From: "Robert Scott" <robert.scott@tunelab-world.com> >To: <pianotech@ptg.org> >Sent: Sunday, February 27, 2005 7:16 PM >Subject: My First Agraffe Repair >> >> There’s a 1927 Steinway M whose strings are a little rusty. Even after >> putting a drop of Protek where the strings go through the agraffe, one of >> them broke off at the threads while I was lowering the pitch of G#2 (a >> bichord). So I guess I will be doing my first agraffe repair job. >> >> What worries me the most is how to decide whether to put one more >> half-turn into the agraffe. I don’t want to leave the agraffe too loose, >> and I don’t want to tighten it so tight that I break it off. Ideally, I >> would like a torque spec so I could use a torque wrench to help me make >> the decision. If the agraffe is pointing in the right direction, but the >> torque is less than X ft-lb, then I will go for another half-turn. Can >> anyone tell me what ft-lb limit I should use? I guess most of you who do >> this a lot develop a feel for how tight is enough, but I need to get it >> right the first time. >> >> In addition, I also wonder how one goes about centering the drill for the >> easy-out on the remains of the old agraffe so that threads in the plate >> are not damaged. Should I expect to mess them up and just commit to going >> up from the current 7/32" size to the 1/4" size agraffe by re-tapping the >> plate? And even if I don’t mess up the threads, it is usual to run a tap >> through them anyway just to clean them up before the new agraffe is >> installed? >> >> Finally, I managed to remove the old bass strings without cutting them by >> straightening them just enough to slide through the old agraffe, so that >> maybe I could re-use the old bass strings. Is that a reasonable >> expectation? >> >> Robert Scott >> Ypsilanti, Michigan >> _______________________________________________ >> pianotech list info: https://www.moypiano.com/resources/#archives >> >> >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives
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