(Leonard, among others talked about this, I am not sure if he endorsed it.) Knowing Leonard, you might be right. He could be slyly derisive, but would never go too far over one's head. He was a great teacher, knowing what the student needed to understand. R Moody ---------- > From: Horace Greeley <hgreeley@leland.Stanford.EDU> > To: pianotech@byu.edu > Subject: Re: Recrowning > Date: Thursday, May 29, 1997 9:48 AM > > 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 > >
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