<DIV>Maybe it's the "quasi-cut off" bar that is the buzzing source. (The maple piece that ties several ribs together.)<BR><BR><B><I>Bill Maxim <wmaxim@sc.rr.com></I></B> wrote:
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<DIV><FONT face=Arial size=2>An institution (University) I service bought a 1921 Steinway B for their recording studio and had a colleague rebuild the instrument about 6 months ago, a truly beautiful job. It has in the meantime developed a buzz (very slight but annoying) very similar to the sound of a small screw lying on the sound board. The buzz shows up around B5-C6. Nothing is on the sound board. Nothing shows up feeling around under the plate. Pressing on the bridge/board in that area makes no change.</FONT></DIV>
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<DIV><FONT face=Arial size=2>However, pressure on the board toward the bass about a foot in from the belly rail quiets it, as does pressing up from beneath at the same point.</FONT></DIV>
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<DIV><FONT face=Arial size=2>The board was not replaced but was shimmed using a router from Spurlock. There are no loose ribs, no run-out glue at the rim, no sign of any separation in the shims or otherwise that I can see.. Both the rebuilder and I are located about 100 miles from the university. Since I am there regularly it falls to me to handle the situation until he can get there.</FONT></DIV>
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<DIV><FONT face=Arial size=2>In desperation, I fell back on the frowned-on practice of wedging something between the board and a beam. I wedged a rubber mute + wooden wedge up under the lath (what is its correct name?) that connects 3 ribs in that area. It stops the buzz for now.</FONT></DIV>
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<DIV><FONT face=Arial size=2>Reflecting on the situation, I wonder if the piano needs a cut-off bar in that area to isolate that portion of the board; and I have in effect provided one.</FONT></DIV>
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<DIV><FONT face=Arial size=2>I would appreciate comments and suggestions on where to look for the real cause of the buzz, how to correct it, etc.</FONT></DIV>
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<DIV><FONT face=Arial size=2>I have the fortunate situation that the faculty member who oversees my work is a member of the Guild and enrolled in the Randy Potter course. In fact, he got to Nashville last week and I didn't! It is a pleasure to work under someone who has the interest if not the experience.</FONT></DIV>
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<DIV><FONT face=Arial size=2>Bill Maxim<BR><BR><A href="mailto:wmaxim@sc.rr.com">wmaxim@sc.rr.com</A><BR></FONT></DIV></BLOCKQUOTE></DIV><BR><BR>Vince Mrykalo<br>University of Utah<p>
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