At 11:26 PM 10/09/2000 -0700, you wrote: >on 10/9/00 8:22 PM, Jon Page at jonpage@mediaone.net wrote: >The cut is perpendicular to the frame right? Yes, front to back. >What is a long tempered lathe, is it something to put inside the diagnal >cut? A long wedge to mated to a slightly tapered kerf. > In what instance is veneer needed as opposed to the cut only? >Thanks, >E. If the weight of the frame does not straighten it out. The veneer needs to be a few thousandths wider than the kerf in order to force the rail to flex. A shims inserted into cuts made on the left side of this curve < ) > will cause the piece to this < I > . A few cuts may be required to produce this and a tapered cut/wedge will be needed if a straight cut does not adequately reduce the bow. Take your time, Jon Page, piano technician Harwich Port, Cape Cod, Mass. mailto:jonpage@mediaone.net ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > By making a saw cut on the concave side about one third the thickness > > of the rail, a piece of veneer can be inserted into the kerf to > straighten it > > out. Also a tapered cut could be made and a long tapered lathe could be > > inserted > > to fine tune the degree of stress placed on that side, then trim the insert > > flush to the > > edges, only a dab of glue is needed on one side in the event future > > adjustments > > are needed. I think early Yamahas had this feature in the front rail. > > > > Regards, > > > > Jon Page
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