---------------------- multipart/alternative attachment In a message dated 9/7/2002 4:10:51 AM Pacific Daylight Time, mfarrel2@tampabay.rr.com writes: > Subj:Re: Rim Width > Date:9/7/2002 4:10:51 AM Pacific Daylight Time > From:<A HREF="mailto:mfarrel2@tampabay.rr.com">mfarrel2@tampabay.rr.com</A> > Reply-to:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A> > To:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A> > Sent from the Internet > > Terry If you use commomn 2 by 4 lumber for your pressure blocks(cauls) this will be suffiecent to cover the rasten board joint on any piano. Also I would make them a degree and an half angle on the bottom as most Steinway rims are such and it relates to a 60 ft. radius. The Stwy D joint width is quite wide. Mine is currently covered with stuff but I think its about 2 inches on the spine (long) side and perhaps the rest is as well. Close enough for government work any way! Any way 2 by 4's will work fine. <<<Dale Erwin > > Roger, Roger, you flatter me to the point of sillyness! I appreciate your > input, but no one has entrusted me to put my first soundboard into their S& > S D! My first board will go in a no-name micro-grand. However, I have the > need to make up a set of clamping cauls and I wish for them to work on any > grand. That is why I was asking about how wide the soundboard/rim contact > area is on a piano with a thick inner rim. Also, with your method, one > would also have to consider the little trimmed corner of the inside top of > the rim - if I remember correctly (I have not seen many pianos with the > boards out!) the width of the soundboard/rim contact area is most often not > the full width of the inner rim. > > The reason I am concerned with this is, first of all, I am prone to worry > about rather inconsequential things that likely make no difference > whatsoever, and second, I think most rim-top bevels are in the one degree > area, and boards that I will be making will be meeting the rim bevel at a > two or possibly even three degree angle. My concern is that if I make my > cauls out of 1.5-inch thick lumber and make the bottom edge at a one degree > angle (I'll have to check and see what angle most rims are beveled at - but > I think it is close to one degree) to meet the rim bevel, I might be > stressing the highly-crowned board a bit. Perhaps a one or two degree > difference between board angle and caul bottom angle is just a not a > concern. > > Any opinions? Or should I just go back to bed and dream about tuning the > perfect unison and not concern myself with rim bevels? > > Terry Farrell > ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/82/6f/61/5e/attachment.htm ---------------------- multipart/alternative attachment--
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