This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Hi Ric, sounds like you are moving along nicely on your project. My = understanding is that there are two trains of thought on this issue.=20 The first is a perhaps traditional view that suggests the panel must fit = snugly to the edge - I think this is part of the "circle of sound" thing = and reflecting soundwaves or vibrations or whatever. Like maybe the = sound might leak out the edge of the panel? Andre Bolduc pours = fiberglass resin into any gaps between soundboard panel edge and the = inside surface of the outer rim. I think some more progressive thinking (IMHO) suggests that all you need = to do is have the edge of the soundboard firmly attached (glued) to the = inner rim. If the edge of the soundboard is immobilized (glued to the = inner rim), you have done all that matters. If the board is now a little smaller than when you took it out, your = locator marks aren't going to be super useful in trying to figure out = where to position the soundboard. Likely the best method will be to get = the bridges optimally located. If you measured the original speaking = lengths, try a combination of reproducing the original speaking lengths = and good alignment of the speaking and backscale portions of the strings = (assuming they were aligned to begin with - perhaps a big assumption!). = If you have good photographs of the original alignment, you can refer to = those. Presumably, the bridges have not changed dimensions much. Keep us informed. Photographs? Terry Farrell ----- Original Message -----=20 From: "Richard Brekne" <Richard.Brekne@grieg.uib.no> To: "Newtonburg" <pianotech@ptg.org> Sent: Tuesday, January 27, 2004 9:34 AM Subject: Rib Thinning > Hi folks >=20 > Finished trimming and sanding down the ribs for the soundboard of this = > old C.C.Lose square and went to see how it fit into the <<rim>> of the = > instrument. I noticed right away it had shrunk down quite a bit.. Of=20 > course it has a slight crown to it now, but that isnt going subtract=20 > much. Looks to have shrunk in cross grain about 6-7 mm at its widest = (60=20 > cm). There is still enough to get a decent enough bite on the rim, = but=20 > it was a tight fit coming out. So the question is... is it advisable = to=20 > add a little strip on one of the edges so that the cross grain width = of=20 > this panel fits tight going in dry ? Or is it advisable to leave = things=20 > as they are.. Centered, each edge has about 5 mm of panel over the=20 > edges of the rim on either side. >=20 > Thanks for any advices, >=20 > RicB > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives > ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/21/d1/b4/b2/attachment.htm ---------------------- multipart/alternative attachment--
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