[CAUT] Shank to Hammer weight spreadsheet

[Jack Houweling]

[CAUT] Shank to Hammer weight spreadsheetJurgen,Could you tell us what tool they used and also did they supportthe shank while scraping in any way? Or was it done outsideof the action?Jack HouwelingThinner shanks will be more flexible and less stiff, hence they will 
have a resonating frequency.  I saw techs "smoothing out" the shank 
frequencies in the Blüthner factory,  They would sort shanks so that 
similar sounding ones were together.  If one shank stood out, they 
could lower its pitch by thinning the shank through judicious scraping. 
  The pitch could only be adjusted downward.

Jurgen Goering

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