Hi- Good luck to all trying to "prove" something here- but I'm not convinced this is really possible in a definitive way. I'm also definitely not the only one who has gone back and forth regarding thinning shanks. I have gone to much extra trouble in the past to this end, but in recent years have come back. For whatever it is worth- I support thinning both shanks and hammers toward the treble, but less so, if any, toward the bass. Back in '97 I did a study with the physics dept. here using their spectrum analyzer to record output data using various combinations of weight and leverage on given notes of a specific concert grand. We got some consistent and interesting results too- but not convincing enough to change anything. I guess I would like to see how consistently individual shanks measure out from a given set before I make conclusions about comparing one type to another. I think most people don't realize how much variation there is just from one part to another. Ultimately we strive for a mere illusion of evenness........and that's the process that is so fascinating! take care- Dennis Johnson St. Olaf College
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