I doubt that thin CA will do much for you. If any tone is possible to be restored I would use epoxy. You may have to orient the piano such that the epoxy will flow into the separation. Just to be clear I'm talking about a failed glue joint between the board and rim NOT a crack in the board. Greg At 02:16 PM 3/1/2006, you wrote: >Greg, Ron, and other Soundboard Experts, > If you do find a soundboard to rim crack with chunks of aging excess >glue collar flaking away, and you don't want to rebuild it what then? Will >thin CA glue squirted into the crack do anything to restore tone? >-Mike Jorgensen > > >On 3/1/06 2:09 PM, "Greg Newell" <gnewell@ameritech.net> wrote: > > > > > Bob, > > Sorry for the delay, but yes, that's > > exactly how I would check for it other than visually where you can. > > > > best, > > Greg > > > > > > At 01:06 AM 3/1/2006, you wrote: > >> Good idea to check this. Is this best checked > >> underneath the SB with a palatte knife or similar for > >> a solid connection between the two? > >> > >> I know SB crack is in some sense a cosmetic > >> distraction, but does speak about how dried out the > >> board is getting to cause separation. > >> > >> Bob Hull > >> > >> --- Greg Newell <gnewell@ameritech.net> wrote: > >> > >>> May sound like a beginners answer but have you > >>> checked the soundboard's glue joint connection to > >>> the inner rim? > >>> > >>> Greg Newell > >>> > >>> > >>> > >>> At 12:08 AM 3/1/2006, you wrote: > >>>> The catastrophic action failure thread may have > >>> merged > >>>> into a discussion of seasonal loss of crown/db and > >>>> therefore I guess sustain/tonal quality. > >>>> > >>>> Here are observations about two terrible sounding > >>> NY > >>>> D's I am servicing; Plus, a question about finding > >>> the > >>>> culprit. > >>>> > >>>> #1. I went to a recital this evening at one of the > >>>> univ. for which I do piano service. The NY D (mid > >>>> 1970's era) was more dreadful than usual, > >>> particularly > >>>> in tonal fullness. There was the initial splatter > >>> of > >>>> sound, quite thin and short, in octaves 5 and 6. > >>> It > >>>> sounds this way I guess at other times of the year > >>> but > >>>> I really noticed it tonight sitting out in the > >>>> audience. When I tune, I zero in so much on the > >>>> tuning that I turn off my voicing perception. > >>> There's > >>>> no money in their budget for improvements at this > >>>> time, unfortunately. > >>>> > >>>> As I sat there, I wanted to investigate, does this > >>>> piano need, voicing or new hammers or a new board? > >>>> Hammers have been replaced (by a previous tech) and > >>>> aren't that worn. The SB has a crack in it that is > >>>> definitely more visible during this time of the > >>> year. > >>>> Yesterday when I tuned somewhere here in the area > >>> it > >>>> was 28% rh at 71 deg. Could be a little different > >>> I > >>>> suppose from location to location. > >>>> > >>>> #2. The second D, which is bothering me greatly is > >>> in > >>>> a church. It's also a 1970's model. I put all new > >>>> hammers and wippens in it replacing teflon parts > >>> and > >>>> problems about 2 years ago. I hoped for great > >>>> improvement in tone. While I got some, the piano > >>>> still lacks power terribly. I am in the process of > >>>> adding keytop/acetone which is giving some help but > >>>> still not what I want. When I pluck a string it's > >>> not > >>>> much or any different than the hammer strike. A > >>>> rocker gauge on the bridge of this piano indicates > >>>> there is downbearing. This one has a Dampp Chaser, > >>> the > >>>> univ. one doesn't. > >>>> > >>>> Do you always check crown/downbearing a particular > >>>> way: under the board with a thread; rocker gauge on > >>>> bridge; thread from agraffe to hitch pin; Lowell > >>> gauge > >>>> or other? I used different methods, but wonder > >>> which > >>>> gives the best reading. > >>>> > >>>> Bob Hull > >>>> > >>>> --- Ron Nossaman <rnossaman@cox.net> wrote: > >>>> > >>>>>> Regarding Steinway, the loose pinning > >>> (currently > >>>>> 20% RH at > >>>>>> this particular venue), coupled with raising > >>> the > >>>>> hammer > >>>>>> line several mm (key-dip; a very skinny .400") > >>>>> brought > >>>>>> about the dread CAF on several notes. (see > >>> Eric's > >>>>> test) > >>>>> > >>>>> Something I've been meaning to ask. New York > >>>>> Steinways, I > >>>>> assume? 20%RH at 70° puts soundboards at 4.5%MC. > >>>>> That's at or > >>>>> below (depending on who you talk to) what they > >>> were > >>>>> originally > >>>>> dried down to for compression crowning with flat > >>>>> ribs. There > >>>>> shouldn't be a lick of crown anywhere in these > >>>>> pianos in these > >>>>> conditions, and they ought to be mostly killer > >>>>> octave and > >>>>> sound thoroughly terrible right now. Do they? > >>>>> > >>>>> Ron N > >>>>> _______________________________________________ > >>>>> caut list info: > >>>>> https://www.moypiano.com/resources/#archives > >>>>> > >>>> > >>>> > >>>> > >>>> __________________________________________________ > >>>> Do You Yahoo!? > >>>> Tired of spam? Yahoo! Mail has the best spam > >>> protection around > >>>> http://mail.yahoo.com > >>>> _______________________________________________ > >>>> caut list info: > >>> https://www.moypiano.com/resources/#archives > >>> > >>> Greg Newell > >>> Greg's piano Forté > >>> mailto:gnewell@ameritech.net > >>> > >>> _______________________________________________ > >>> caut list info: > >>> https://www.moypiano.com/resources/#archives > >>> > >> > >> > >> __________________________________________________ > >> Do You Yahoo!? > >> Tired of spam? Yahoo! Mail has the best spam protection around > >> http://mail.yahoo.com > >> _______________________________________________ > >> caut list info: https://www.moypiano.com/resources/#archives > > > > Greg Newell > > Greg's piano Forté > > mailto:gnewell@ameritech.net > > > > _______________________________________________ > > caut list info: https://www.moypiano.com/resources/#archives > >_______________________________________________ >caut list info: https://www.moypiano.com/resources/#archives Greg Newell Greg's piano Forté mailto:gnewell@ameritech.net
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