Pinning and Tone

[A440A@aol.com]

Alan writes: 
<< I'm looking around to see if someone has figured out a
way to systematically check for both friction and firmness in an efficient
way (ie without painstakingly removing every flange!!) >>

     Check the friction by swinging the action stack back and forth, noting 
which hammers move and how they do so.  Check firmness by holding a row of 
hammers and shanks up with a slat of wood that has some 600 grit sandpaper glued 
to it.  Any flanges that lack firmness will allow the hammer to visibly move 
from side to side,(even if only one side of the bushing is loose). 
   A slat with 80 grit will apply more force, a smooth slat(like what comes 
in Renner boxes), will apply less. 
Regards, 



Ed Foote RPT 
http://www.uk-piano.org/edfoote/index.html
www.uk-piano.org/edfoote/well_tempered_piano.html
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MP3.com: Six Degrees of Tonality</A>