This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Terry said: "You still don't know for sure because you don't know how = the rib was =3D originally shaped. I assume you mean the "face" to be the surface glued = =3D to the panel and the spine is the opposite surface. What if the "face" = =3D was straight and the "spine" was contoured (feathered) originally. Dry = =3D down a panel and glue on the ribs. Let the board develop its compression = =3D crowning and now you have a curved straight "spine" and a curved = "face"." Terry, I think you are giving most piano manufacturers too much credit for = possibly doing it the way many do today. Let's face it, this was a mass = production setting. They took a "straight" piece of wood and slapped it = on another "flat" piece(s) of wood. If the R&D people said that the the = "Face" had to be curved before gluing, then the workers found the = quickest/easiest way to do that. They, in no way, fussed and labored = over these pianos like we do. It was a job, pure and simple. So, if you find a rib that is curved on one side, (the face, convex), = and flat or concave on the other, then you can bet your sweet bippy that = the R&D specified a curved rib, BEFORE glue up!<G> Joe Garrett, R.P.T. Captain, Tool Police Squares R I ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/57/8f/f8/40/attachment.htm ---------------------- multipart/alternative attachment--
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