Soundboard Removal

[Erwinspiano@aol.com]

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Ric
  My guess is Mr Bluethner didn't pay that much precise attention to the 
amount of  crown  especially if he was compression crowning ,which he  was. 
Judging  by the one & only one I've rebellied he didn't get  much crown  for long as 
his ribs were to flat & not tall. Panel was  falling apart.
   If he had a 60 ft radious thru out I'd be  surprised. And historically 
ribs that short  meaning not tall ,as we've  discussed much, won't hold a 
compression crown many years. 
    I think they just  knew  compression  was apart of the accepted recipe of 
the day & this is how  it was done.
  He did have a beautiful sweeping cutoff bar though and  his ribs did some 
fanning as I recall.
  Crown the  ribs to something tolerable & the  piano will be fine. His 
scales were also horrible & whacky & all over  the map. a new bridge is what the 
one I did needed. Didint' get it though 
  Hey it is what it is as my wife says.
   Rumor has it that his glue maker was the  worst and so getting  a 
Bluethner apart is  a cake walk. That's why he  used all those screws in the face of 
the board. It'll be interesting to hear the  progress on yours. If you need 
advice........
  Dale


I'm about to get started on an old first year  production Julius Bluthner 
Patent Grand and will be using this basic  approach to repairing the 
soundboard. I have to try and find out what  degrees of crown old Julius 
used way back when, and how achieved it  first.  That kind of info seems 
difficult to be sure  of.

Cheers
RicB


 

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