Keytops ?? :-( ...

[A440A at aol.com]

David writes:

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Years ago when I refinished pianos, we used rotten stone to break up the 

old finish before applying stripper...very rough stuff...don't know why 

the difference between the two...

 
      I have different image of rotten stone.  It was powder, a fine pumice, 
that broke down into finer particles as it was being used, allowing for mirror 
finishes if you got just the right amount to start wit. Using it was a real 
art.  
Ed Foote RPT 
http://www.uk-piano.org/edfoote/index.html
www.uk-piano.org/edfoote/well_tempered_piano.html