Typically, the procedure involves cutting off the old knuckle leaving the core in the shank. That gives you a solid piece of would in which you can cut a new notch. In the past I used a jig and a router which I found drifted a bit too much. Now, when I need to do this job, I cut the notch with a band saw using the old core as a reference. David Love ----- Original Message ----- From: "Richard Brekne" <Richard.Brekne@grieg.uib.no> To: "Pianotech" <pianotech@ptg.org> Sent: January 06, 2003 8:59 AM Subject: Re: Ratio Question David Love wrote: > > That's a good reason to opt for moving the capstan rather than the knuckle > to fix a problem action. Small deviations in cutting the new notch for the > knuckle will make quite a large difference. The capstan placement is more > forgiving. > > David Love > Grin... very good point. There is a way around that problem however. Enlargen the notch to just a tad more then you need for two knuckles, and THEN fill the back side of the notch with appropriately thick material. Glue knuckels then as usual, with perhaps a bit more liberal amount of glue. Sorta like hang'n hammers otherwise. Cheers RicB -- Richard Brekne RPT, N.P.T.F. UiB, Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html _______________________________________________ pianotech list info: https://www.moypiano.com/resources/#archives
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