Hi Don, Grey market or not, how does even the best of constructed boards survive such a climactic thrashing? Even at 20%Relative Humidity and 70degrees temp., equilibrium moisture content is roughly 4.5 to 5% and about the recommended e.m.c. if you were building a pure compression style board.I.E flat ribs& curved press(Steinway style specs.) Do pianos just pop like ripe melons hitting the asphalt or slowly self destruct or what. So I'm curious to know what happens over time to any good piano with and without humidity control. I mean 4%. Lets see that's roughly like )_(*&%^$#$$@@!@# NO MOISTURE AT ALL!!!!!!! IN THE WOOD.!!!!!! Dale Erwin P. I am from Calif after all ,this does'nt compute.
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