capo buzz

[Otto Keyes]

Don't know how I manage to send stuff inadvertantly.  This computer does
some odd things at times -- oh well!

Working near the strut, especially with the strings on, will probably
require a half-round file of some sort.  It's hard to get at with a flat
file even with the strings off -- especially getting the proper angle.
Perhaps a Fordham grinder, or dremel with a flex end could be used, though
extreme caution must be taken not to over grind.

I polish up with a fine grit, 1" wide sanding belt.  This takes the edges
off the V, making it a short radius U, which should minimize the breakage
problem.

By the way, thanks for all your input on the voicing perception issue.  It
is a matter of perception. Charles' post on the pinning/tone issue is the
kind of thing I've experienced here, but has resulted in over-voicing in the
past, & the resultant short hammer life.  That has also created a yo-yo
effect in the psyche of the dept. leading to additional voicing
"emergencies".  It will take some time to change the culture and educate
both faculty & students that perception is a huge part of tone, and
consistency (&dependability) does not come from the knee-jerk response, but
from adherence to a consistent voicing standard.  Mama may not be there to
hold your hand & hear you whine when you have to make a piece of junk sound
good out in the real world.

Otto


----- Original Message -----
From: "Lance Lafargue" <lancelafargue@bellsouth.net>
To: "'College and University Technicians'" <caut@ptg.org>
Sent: Thursday, October 16, 2003 9:01 AM
Subject: RE: capo buzz


> Thanks.  I have the McMorrow book and I've studied it.  It basically
> says to file a definite V with the contact point narrowing to a .5mm
> width.  This seems that it would add to string breakage, but otherwise
> makes sense.  I do plan to confirm the job is approved and that I will
> be paid for my efforts.  McMorrow claims (back in 1980(?)s) to have done
> 200+ of these and the problem is permanently fixed.
>
> What you claim about the casting flaring to join the strut explains why
> those first notes are always the hardest to correct.  I've been
> struggling with this for years and I hope I am closing in.  Smoothing to
> a smoother U shape does not permanently correct the problem (in my
> experience). Anyone have any experience doing this V-Bar shaping to a
> V????? (not just smoothing with sandpaper to a smooth U)
>
> Lance Lafargue, RPT
> LAFARGUE PIANOS
> New Orleans Chapter, PTG
> 985.72P.IANO
> lancelafargue@bellsouth.net
>
>
> -----Original Message-----
> From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] On Behalf Of
> Ron Koval
> Sent: Thursday, October 16, 2003 8:33 AM
> To: caut@ptg.org
> Subject: capo buzz
>
> Hi Lance,
>
> Just pulling the strings up to pitch will make a groove.  Then, if there
> is
> any spacing that is done, that makes more marks.  Add rubbing the
> strings to
> try to remove string bends, and the capo can get marked up pretty
> quickly,
> even on a new instrument.  Also, if you are having problems close to a
> strut, many times the capo is too wide in that area as the casting
> flares
> out to join the strut.  Make sure when you are done reshaping and
> dressing
> the area, that you space the strings as you pull up to pitch, not after.
>
> See if braiding something works first, then make sure someone will pay
> for
> all the capo work before digging into this!
>
> Ron Koval
> Concordia U.
>
>   I am told that the main problem lies in the V bar, not in the hammer,
> =
> and that smoothing the bar with sandpaper will clean up the termination
> =
> and permanently fix the buzz.  This is one of the few things I did not =
> do, since I was really originally only out for a warranty tuning  ;  )
> =
> Thoughts? =20
>
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