Dry wood down to a lower MC prior to assembly. That would tend to lessen the chance of the piano pulling apart in a dry environment. 'Course, I suppose it would tend to increase the chance the piano might explode in a moist environement! I'm not supporting any of these practices - whatever they may really be. I think wood in a piano should be dried down to an EMC in a 40 to 50% RH environemnt prior to assembly and then the piano kept in such an environment. Period. Use humidity control. Terry Farrell ----- Original Message ----- > Out of curiosity: > > "So I think the manufacturing process was adjusted to have the pianos > survive some of these > more extreme climates." > > What do you suppose they would have changed in the manufacturing side to > make the pianos survive these extremes? > > David Ilvedson, RPT > Pacifica, California > > ----- Original message ---------------------------------------- > >>By HC, I assume you meant MC = moisture content? > >>I agree with you completely Paul. Seems silly to me. My understanding is >>that Yamaha first experienced problems with some of their pianos when the >>first started exporting them to North America. The pianos were "seasoned" >>for the Japanese climate - which, as I understand it, is on the humid side >>and is completely/nearly devoid of any really dry climates. When these >>pianos starting living in places like Arizona and Minnesota (in the >>winter - >>next to the wood stove), some of them started imploding. So I think the >>manufacturing process was adjusted to have the pianos survive some of >>these >>more extreme climates. > >>Personally, I think climate control in one form or another should be >>paramount with pianos - this business of changing manufacturing MCs for a >>target climate seems a bit silly to me. > >>Terry Farrell
This PTG archive page provided courtesy of Moy Piano Service, LLC