I've seen a 1902 Steinway D with 4 tuning pins sizes, same intention I guess. I mike the tuning pins, it takes 10 min to be done, if one use the go/-no-go gauge method with the mike holded in some fixture. Indeed that always allow me to have 3 strengths with Biene tuning pins, but the difference is really light, no more than for instance 6.745 to 6.755 with this brand, Japanese tuning pins being less precise and having then a larger difference as 6.745 to 6.760. I believe that I prefer avoiding the smaller ones in the bass nowadays, so it is worth the effort, thanks to an old issue of the journal (credits !) I believe also that it is better to keep a simple cheap mike for that job, as the repeating fast passage of the pins inside (with some elan) it may give some imprecision to the mike after awhile. BTW a useful tool can be made with the tail of a plastic key cover, you saw and file a rectangular aperture at each side to mike the pins on the strung piano, so you can know fast if it have been restrung - depending of the original size used on the brand (not always easy to mike the base of the pin on a strung piano). Isaac OLEG Entretien et reparation de pianos. PianoTech 17 rue de Choisy 94400 VITRY sur SEINE FRANCE tel : 033 01 47 18 06 98 fax : 033 01 47 18 06 90 cell: 06 60 42 58 77 > -----Message d'origine----- > De : pianotech-bounces@ptg.org > [mailto:pianotech-bounces@ptg.org]De la > part de Avery Todd > Envoye : lundi 9 juin 2003 01:26 > A : Pianotech > Objet : Re: curing loose t-pins w/sandpaper (different sized pins) > > > Daniel, > > Just mic a whole set of pins before you restring and you'll > be amazed at > the difference in sizes! :-) > > Avery > > At 01:10 AM 06/09/03 +0200, you wrote: > >Me too :) > > > >However, it seems like some brands even come with > different diameters on the > >tuning pins. We had two Bechstein A's from 1904-1915 in > the workshop. I > >measured the pin-size in the treblestrings and got 6.75mm, > the other guy > >measured it in the bass and got 6.9mm. We never thought > about the fact that > >we had measured on different sides on the pianos, so we > assumed they used > >different sizes on the whole pianos, from the factory. > Since the older one > >was the one with 6.75 we assumed they started with 6.9mm > to decrease the > >flag-poling effect (they got openfaced pinblocks, for all > of you not > >familiare with Bechstein). We were fairly sure that they > never had been > >restrung. We later realized that they had 6.90 in the bass > and 6.75 on both > >the pianos. The only reason I can come up with is the > stringtension being > >higher in the bass. > > > >Anyone with an idea? > > > >Best regards, > >Daniel Lindholm > > > >----- Original Message ----- > >From: "Farrell" <mfarrel2@tampabay.rr.com> > >To: "Pianotech" <pianotech@ptg.org> > >Sent: Sunday, June 08, 2003 3:17 PM > >Subject: Re: curing loose t-pins w/sandpaper > > > > > > > I find it frustrating when tuning a piano with several > different size > >tuning pins. > > > > > > Terry Farrell > > > > > > ----- Original Message ----- > > > From: "Daniel Lindholm" <mailinglists@home.se> > > > To: "Pianotech" <pianotech@ptg.org> > > > Sent: Saturday, June 07, 2003 7:07 PM > > > Subject: Re: curing loose t-pins w/sandpaper > > > > > > > > > > That sounds like a really temporary fix. Why not > replace the pins with > > > > larger while you are at it? > > > > > > > > ----- Original Message ----- > > > > From: "Clyde Hollinger" <cedel@supernet.com> > > > > To: <pianotech@ptg.org> > > > > Sent: Saturday, June 07, 2003 9:24 PM > > > > Subject: curing loose t-pins w/sandpaper > > > > > > > > > > > > > Friends, > > > > > > > > > > I service an old upright with several very loose > low bass tuning pins. > > > > > Two of them won't even hold a pitch. I tried epoxy > on them, but that > > > > > didn't work. I'd like to try sandpaper in the holes. > > > > > > > > > > For those who have done this successfully, what > type of sandpaper and > > > > > what grit do you use? Can I just drive the tuning > pin in the hole > >after > > > > > fitting a sandpaper shim, or should the pin be > turned in? I'd like to > > > > > give this a try on Monday. Thank you. > > > > > > > > > > Sincerely, > > > > > Clyde Hollinger, RPT > > > > > Lititz, PA > > > > > > > > > > _______________________________________________ > > > > > pianotech list info: > https://www.moypiano.com/resources/#archives > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > pianotech list info: > https://www.moypiano.com/resources/#archives > > > _______________________________________________ > > > pianotech list info: > https://www.moypiano.com/resources/#archives > > > > > > > > > > > >_______________________________________________ > >pianotech list info: https://www.moypiano.com/resources/#archives > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives >
This PTG archive page provided courtesy of Moy Piano Service, LLC