Duaine, Thanks for your reply. I hadn't thought of the grooves made by bass string windings. It seems that the bass section is usually where I notice this too so that makes sense. The problem here is that the biggest change in tone is in the middle section, third through fifth octaves. I also agree about hammer shaping but this is an old monster, It's past filing and needs new hammers. I don't think this old fella is really worth it. chris >Chris, > >The sort of it is - yes. In raising the pitch that much, even though >the hammers are grooved, you are changing where the string and the >hammer head meet so, in other words, especially in the wound >strings, the windings in the grooves have changed position. I always >recommend hammer shaping when the hammers are grooved. > >Duaine > >Duaine Hechler >Piano, Player Piano, Organ, Pump Organ >Tuning, Servicing & Rebuilding >Associate Member of the Piano Technicians Guild >Reed Organ Society Member >St. Louis, MO 63034 >(314) 838-5587 >dahechler@charter.net > > >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives -- Christopher D. Purdy R.P.T. School of Music, Ohio University Athens, Ohio 45701 (740) 593-1656 fax (740) 593-1429 purdy@ohiou.edu
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