Curious to know the name of piano and where the shim (wedgie, I might as well be the first one to make a crack on this one) was placed. R Moody ---------- > From: Marcel Carey <mcpiano@multi-medias.ca> > To: pianotech@byu.edu > Subject: Re: Recrowning > Date: Thursday, May 29, 1997 1:00 PM > > Dear List, > > I was saw a baby grand that had had that repair made (shim in the bridge). I > can assure you that the repair had NOT restored any sustain to the board. > The board maybe wasn't flat anymore, but it DIDN'T sound anything close to a > new soundboard. To me, this kind of repair is a loss of time and customer's > money. > > Marcel Carey, RPT > Sherbrooke, QC > > At 07:48 97-05-29 -0700, you wrote: > >Richard and list, > > > >AHA, there's the rub. > > > >Even if you put in multiple wedges, the crown so induced has a net affect > >only on the area of the board in the immediate vicnity of the bridge. > >(Leonard, among others talked about this, I am not sure if he endorsed it.) > > > > > >Also, "wedge" is a relative term. In this case, it would be not so much a > >wedge as a shim, driven into a saw kerf after the board is jacked up. The > >kerf, to be effective, would have to be made _prior_ to jacking up the > >board, so as to be more open when the crown is "corrected", thus allowing a > >larger wedge, which would, in turn, not only be more effectively clamped in > >place, but would create more "staying power" in the induced crown. The > >placement of the kerfs should be determined during the taking of your very > >painstaking measurements... > > > >Like I said, just about as much trouble as installing a new board, without > >the benefits. > > > >Best. > > > >Horace > > > > > > > >>In reply, so as to keep the thread on Horace's comments, I seem to > >>remember Leonard Jared talking about placing a wedge in the bridge > >>ala keystone fashion. This would involve cutting the bridge in such a > >>way to insert this as I don't think he mentioned removing the bridge. > >> This is so vague in my memory, I am not sure of any other details. > >>Perhaps some one else has heard of this. The soundboard had to > >>"jacked up" the incision made (before or after?) in a predetermined > >>spot, the wedge inserted, and the sb let back down. This was only > >>from "hearsay" and was it from him even?? > >> Even if this is a case of me not distingushing dreams from reality, > >>(is that why I perceive some saying, "Ah ha, he has let the cat out > >>of the bag?") on THINKing about this, more than one wedge might be > >>needed. But where? Also I would like to ask, how does the bridge > >>run in relation to the crown? > >> > >>Richard Moody > >> > >>"I wanted only to try to live in accord with the promptings > >>which came from my true self. > >>Why was that so very difficult?" > >>Hermann Hesse Demian > >> > >> > >>Ever seen a wine cork placed between the wooden post and a rib? > >>Probably to stop a buzz. Not the one created by uncorking the wine > >>bottle. rm > >> > >> > >> > >>---------- > >>> From: Horace Greeley <hgreeley@leland.Stanford.EDU> > >>> To: pianotech@byu.edu > >>> Subject: Re: Recrowning > >>> Date: Wednesday, May 28, 1997 8:08 PM > >>> > >>> Jon, > >>> > >>> Gee, I don't know, this is my fourth post to the list in one day... > >>> > >>> You wrote: > >>> > >>> >I heard from a guy who claimed he can re-establish sound > >>> >board crown with shims. Even if it has 3/8" negative crown. > >>> > > >>> >Can someone fill me in on what I might have missed in the > >>> >last few years of trying to keep up with the last few hundred > >>> >years? > >>> > >>> Sure - this is something a bunch of us retired a long time ago. It > >>does > >>> keep surfacing, however. > >>> > >>> So, now that you know what my prejudice is: > >>> > >>> While there are different methods, the deal is to disassemble the > >>piano, > >>> usually invert it, wedge the board up by driving wedges(!) between > >>the > >>> beams and ribs, then proceed with whatever repairs are in order for > >>the > >>> board (shimming, etc.), then glue all in place (except for the > >>wedges, of > >>> course). > >>> Among the variations I've seen/tried > >>snip see thread > > > > > > > > > >Horace Greeley hgreeley@leland.stanford.edu > > > >LiNCS voice: 415/725-4627 > >Stanford University fax: 415/725-9942 > > > > > > >
This PTG archive page provided courtesy of Moy Piano Service, LLC