Mr Galassini wrote in a previous message in PW not too long ago that I don't understand at all, so I figured I ask.
I wondered if loosening piano strings would extend the life of a soundboard if the piano was not used (in storage)
Mr Galassini wrote in reply> This is not really possible with a compression crowned board. The load is part of what keeps it intact in the first place.
A concept I do understand is that if the soundboard was made by manipulating MC or by physical stress such that the boards are in compression and the ribs in tension (or any kind of opposing force, it does not matter the direction), that over time, materials creep and built in stress will be relieved. If manipulation of MC was the driver of that force promoting crown, moving to a MC approaching the point at which the ribs were placed would relieve that stress to an extent (I guess) reducing driving force for creep. Still, I don't think that is the main effect that Mr Galassini had in mind. When strings are changed out, the soundboard is not loaded by the strings. Is there some bad effect if the strings minimally load the soundboard for some more extended period of time? Mr Galassini, or anyone if it is known, would you please comment on the statement in bold, above?
Edited by phacke (09/28/13 02:52 AM)
Steinway YM (1933)
J. S. Bach, Sonata No. 1 in B minor (BWV 1014) duet with violin