This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Terry asked: " How can you =3D determine that? If the rib is curved, could it still not be from panel = =3D compression? You may well be correct, but I just don't see how one could = =3D be so sure. Terry, It's simple. Use a straight edge. If the rib "face" is curved and the = "spine" is straight, then the rib has a machined "crown". With an olde = piano, the "spine" may be curved the other way. Still a machined-in = crown.<G>=20 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/65/3d/a5/af/attachment.htm ---------------------- multipart/alternative attachment--
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