---------------------- multipart/alternative attachment =20 Joe,David Actually you're possibly both a bit right & wrong. Wood that ages gets=20 harder & that could equate to some increase in stiffness without an increas= e in=20 mass. The tone perhaps changes because of it but most likely its just a los= s=20 due to a change in impedance. I bought some air dried Sitka a few years back. It had air dried 20 year= s=20 in a barn in the heat & cold of the central valley Ca. It was rough cut for= =20 an eventual sailboat mast that never got made. I had it resawed at a local mill that does a huge amount of custom work &=20 the head guys comment was" that was some hard wood". He couldn't believe it= =20 was spruce. He said there were sparks flying off the band saw blade & state= d=20 that the nature of wood is to get harder the longer it's dried. So take it=20= for=20 what it's worth. Dale Erwin I think that=E2=80=99s backwards. As boards get older they get stiffness=20 challenged. More loudness comes from being less stiff, lower impedance, mo= re energy=20 is absorbed by the board rather than reflected back, so louder and less=20 sustain. That=E2=80=99s why the epoxy method works as it does. It adds st= iffness without =20 adding much mass. Anyway, I sent the post on the spur of the moment withou= t=20 thinking it through. People, of course, do compensate for the change in=20 stiffness, meaning inability to support the string load, by easing up on th= e=20 bearing=E2=80=94as Ron N. pointed out. It was just a thought. Epoxy and ea= se up on the=20 bearing, rescale to correct and smooth out the scale is probably the better= =20 way to go. =20 =20 David Love davidlovepianos@comcast.net =20 ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/2a/7c/66/fd/attachment.htm ---------------------- multipart/alternative attachment--
This PTG archive page provided courtesy of Moy Piano Service, LLC