Hi Ric, This is done on some pianos. The Baldwin SD and SF10 have carefully machined case hardened treble resonators (tm). This a classic example of controlled radius and duplex angles. The plate has a milled face so the units can be screwed to the plate with machined allen bolts. Regards Roger At 10:36 PM 10/3/01 -0500, you wrote: >I am wondering why not use a simple rod as in some uprights for the string >cross over instead of a cast iron capo bar with all the vaguries involved? >The rod would offer an exact diameter and precise hardness since it would >be added on in the manufactoring process. ---ric > >----- Original Message ----- >From: jolly roger <baldyam@sk.sympatico.ca> >To: <caut@ptg.org> >Sent: Wednesday, October 03, 2001 8:25 PM >Subject: Fwd: Re: capo-hardening? > > >| > >| >Hi Ed, >| > The case hardening from the quenching is typically less than >| 1mm deep, so it does not take too much dressing to file through it. >| >Roger >| > >| > >| >At 10:26 PM 9/23/01 -0500, you wrote: >| >>Mark- >| >>I've tried burnishing the capo after dressing with file and emery >paper. It >| >>didn't do any harm, the section sounded clear, but this was just as >part of >| >>restringing, it was not a piano with zingers. >| >>Ed S. >| > >| >
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