<div>That's easy. I could do that. <BR></div> <div>The crack is visible. Thin viscosity CA glue would run right through the separation. </div> <div> </div> <div>Shouldn't I try to move the soundboard back into the rib first? With a clamp or something? Then apply the CA? </div> <div> </div> <div>Tom<BR><BR><B><I>Dean May <deanmay@pianorebuilders.com></I></B> wrote:</div> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"> <META content="Microsoft Word 11 (filtered medium)" name=Generator> <STYLE> v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} </STYLE> <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:SmartTagType name="PostalCode" namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType><o:SmartTagType name="State"
namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType><o:SmartTagType name="City" namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType><o:SmartTagType name="place" namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType> <STYLE> st1\:*{behavior:url(#default#ieooui) } </STYLE> <STYLE> <!-- /* Font Definitions */ @font-face {font-family:"Bradley Hand ITC"; panose-1:3 7 4 2 5 3 2 3 2 3;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:12.0pt; font-family:"Times New Roman";} a:link, span.MsoHyperlink {color:blue; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {color:purple; text-decoration:underline;} p.MsoAutoSig, li.MsoAutoSig, div.MsoAutoSig {mso-margin-top-alt:auto; margin-right:0in; mso-margin-bottom-alt:auto; margin-left:0in; font-size:12.0pt; font-family:"Times New Roman";}
span.EmailStyle17 {mso-style-type:personal-reply; font-family:Arial; color:navy;} @page Section1 {size:8.5in 11.0in; margin:1.0in 1.25in 1.0in 1.25in;} div.Section1 {page:Section1;} --> </STYLE> <DIV class=Section1> <div class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">>>Tom Sivak’s problem piano<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">The piano: an <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:place w:st="on"><st1:City w:st="on">Everett</st1:City></st1:place> studio console, about 30 years old. <o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">The client: one of my piano students.<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">The problem: crack in the
soundboard that makes a prominent, buzzy sound from about C4 to A5, with G4, G#4, and A4 being by far the worst.<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Below is what I posted back in May. Don’t worry about filling the crack unless you are
concerned about cosmetics. If there is no visible separation from the ribs, just use the thin glue. If the gap is wide enough that the glue keeps running through then you might run a bead of the medium thickness glue in that area. <o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">If anyone else tried this you might chime in for Tom.<o:p></o:p></SPAN></FONT></div> <DIV> <div class=MsoAutoSig><B><FONT face="Bradley Hand ITC" color=navy size=6><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 22pt; COLOR: navy; FONT-FAMILY: 'Bradley Hand ITC'">Dean</SPAN></FONT></B><FONT color=navy><SPAN style="COLOR: navy"><o:p></o:p></SPAN></FONT></div> <div class=MsoAutoSig style="MARGIN: 0in 0in 0pt"><?xml:namespace prefix = u1
/><u1:PersonName u2:st="on"><FONT face="Times New Roman" color=navy size=3><SPAN style="FONT-SIZE: 12pt; COLOR: navy">Dean May</u1:PersonName> cell 812.239.3359 <o:p></o:p></SPAN></FONT></div> <div class=MsoAutoSig style="MARGIN: 0in 0in 0pt"><FONT face="Times New Roman" color=navy size=3><SPAN style="FONT-SIZE: 12pt; COLOR: navy">PianoRebuilders.com 812.235.5272 <o:p></o:p></SPAN></FONT></div> <div class=MsoAutoSig style="MARGIN: 0in 0in 0pt"><u1:place u2:st="on"><u1:City u2:st="on"><st1:place w:st="on"><st1:City w:st="on"><FONT face="Times New Roman" color=navy size=3><SPAN style="FONT-SIZE: 12pt; COLOR: navy">Terre Haute</SPAN></FONT></st1:City><FONT color=navy><SPAN style="COLOR: navy"></u1:City> <u1:State u2:st="on"><st1:State w:st="on">IN</u1:State></st1:State> <u1:PostalCode u2:st="on"><st1:PostalCode
w:st="on">47802</u1:PostalCode></st1:PostalCode></SPAN></FONT></st1:place></u1:place><o:p></o:p></div></DIV> <DIV> <DIV class=MsoNormal style="TEXT-ALIGN: center" align=center><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"> <HR tabIndex=-1 align=center width="100%" SIZE=2> </SPAN></FONT></DIV> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">>>Dean, How do you treat ribs and rim on a grand with CA glue? Please<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">describe the process.<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier
New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">I think Don Mannino was the first guy to tell me about this back in the mid '80s as a warranty fix for some Young Chang grands that were having soundboard/rim separation issues. It was also my first exposure to CA glue.<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">I was very skeptical, but he assured me it would work. And it did.<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Remove lid, put moving blanket down and turn piano on its side. Use a brush/vacuum to remove any dust/dirt
coating on the ribs and soundboard rim.<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">If you don't, the dust will absorb a lot of your glue before it gets into the joint.<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">I like to first mist on accelerator on the tops of all the ribs and all the way around the soundboard. Without the accelerator you run the risk of the glue leaving the joint before it sets up. <o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New"
size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Using a full bottle of glue, squirt the glue vertically and generously into the rim joint around the top (you can't do this if the bottle is half empty). The capillary action of the glue will suck it vertically into the joint (it is an amazing thing to behold). BTW, if you are working on an upright, do the same thing: start at the top rim of the soundboard and squirt vertically. <o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Then do the ribs: starting at the top apply enough glue to the joint so it runs down the rib to the soundboard/belly rail joint (nomenclature police, please advise). As you observe the bead of glue running diagonally down the rib you may observe
it disappearing into the joint. If this happens you've located an air pocket in the glue joint, or some separation between the rib and soundboard. Give it some more glue to fill up the pocket. If glue runs all the way through and comes out the bottom of the rib, spray accelerator along the bottom to set the glue up there and form a dam. In severe cases I'll spray accelerator generously on the top as well to set the glue up quicker before it runs out of the void. <o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Try to run enough glue down the rib so that it will also cover the sndbrd/belly rail rim joint. Then do the rest of the rim along the bottom and back curve. <o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT
face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Do a final misting of accelerator everywhere you squirted glue and wait 15 seconds. You don't want any unset glue running out when you set the piano<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">upright- DAMHIK. Then set the piano up and you're good to go.<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">If you have a case of severe separation you may want to use your favorite method of pulling the joint
together before applying the glue. If it is an old clunker and you just want to eliminate the buzz it isn't really necessary.<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">For an average piano, I use about 1 oz. For severe cases, 2-4 oz- sometimes I'll even use thick CA if there is a lot of separation and I'm not pulling it together. <o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">The same process will also work for loose bridges/pins, especially the aprons on bass bridges. I've also
spoken to a tech that claims it fixed a grand with a dead section that apparently had a void underneath the bridge. <o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">I've done this procedure for 15 years now and never had a buzz return that I know of.<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">If you are also going to CA treat the pins, go ahead and turn the piano upside down and apply from the bottom of the tuning pin hole. I use no accelerator for this as I want the glue to soak into
the wood. You will of course need to remove the fall board and action before you do this. Don't use any more than 2 oz for this pin treatment. You'll waste glue or worse (much worse), it will run out in places where you don't want it to. <o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Dean<o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Dean
May cell 812.239.3359 <o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">PianoRebuilders.com 812.235.5272 <o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Terre Haute</SPAN></FONT></st1:City><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"> <st1:State w:st="on">IN</st1:State> <st1:PostalCode
w:st="on">47802</st1:PostalCode></SPAN></FONT></st1:place><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p></o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p> </o:p></SPAN></FONT></div> <div class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></div></DIV></DIV></BLOCKQUOTE><BR>