Capo hardening

Bdshull@AOL.COM Bdshull@AOL.COM
Tue, 2 Mar 1999 10:57:50 EST


In a message dated 99-03-02 09:18:10 EST, you write:

<< Dear list
 very interesting talk about hardening the Vbar, but how can you do it in the
 real life, I mean, withouth having the plate going to a foundry ?
 Thank you !
 
 Luigi Lamacchia
 www.inmedia.it/lamacchia >>

Luigi, the best explanation of procedure is in Matt Grossman's letter to Jack
Krefting, included in the Tech section of the Journal back in '84.  It was
referenced a couple days ago in a post on this topic.   Briefly:

The easiest way to reharden the capo today is with the service of a welder who
is skilled in the use of a TIG (tungsten-inert-gas) welder.  If you live in a
large enough community you will find one.  When you discuss what you want with
this person, the level of understanding and willingness to try something
different should be evident - otherwise find someone else.   All that is
heated is the outer surface (1mm or so?) of the material.  You want to achieve
a certain contour (others on this list may have more experience with how this
may be achieved) - but at least no broader a slope than exists on the current
bar.   It can be ground slightly for smoothness after reflowing.  You do not
want to change the string height at all, of course.  The plate usually must be
taken to the welder for this service because of the lack of portability of the
TIG welder.  Check out the article - that's how I got started!
Good luck!

Bill Shull
U of Redlands, La Sierra U
Loma Linda, CA





This PTG archive page provided courtesy of Moy Piano Service, LLC