[pianotech] New stuff at the convention?

[A440A at aol.com]

Dean writes:

<< The agraffes on this piano alternated with one positive and the next
negative on downbearing. I imagine the intent was to have the net effect be
zero >>

     This is an soundboard approach that  was used on my parents' piano.  
It is a 1875 Hallet-Davis upright!!  



Ed Foote RPT 
http://www.uk-piano.org/edfoote/index.html
www.uk-piano.org/edfoote/well_tempered_piano.html
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