capo-hardening vs hardened capo rod

[jolly roger]

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.
>| >
>|
>