Irregularities in key bushing

[Isaac OLEG]

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Dean,

Allowing the keys to dry for 224/48 h on the stack is yet easing the balance
hole a lot, I've been made very cautious with the kind of firmness we get
with the rebushing process, as fiber are just ready to crunch again.

I also wait 24 hrs with the cauls in place (while I understand it is not
always possible, and at last one night with the sizing cauls when available
(not for all keyboards)

A lot of cauls ordering may be in order but alas ....

A good process I use for older keyboards, is the installation of thicker
center pins (drill the balance rail prior to installation) thinner cloth and
some problems possibly arise with the capsule, but the firmness of the
balance is then appreciable.

I think of a process to glue a sliver (sort of boat shaped) of wood in a
notch cut with those U shaped chisels to close a too large balance hole
without having to install wooden washers.

The hole after that have to be filed with a rat file modified by grinding to
be sure to file at the wanted place.

Any other idea ?

Regards.

Isaac OLEG


-----Message d'origine-----
De : pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]De la part
de Dean May
Envoyé : samedi 21 août 2004 15:50
À : Pianotech
Objet : RE: Irregularities in key bushing


I KNEW that would irritate someone. Should’ve known who it would be. ;-)



Are you trying to teach this old dog new tricks?



Dean

Dean May             cell 812.239.3359

PianoRebuilders.com   812.235.5272

Terre Haute IN  47802



-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]On Behalf
Of Joe Garrett
Sent: Friday, August 20, 2004 10:45 PM
To: pianotech
Subject: Re: Irregularities in key bushing



Dean May said: "BTW, using this steam method to remove the balance rail felt
actually
"sizes" the worn balance rail hole, closing it up a tad. This allows you to
ease it back up to the perfect size when installing. I use the Yamaha
capstan wrench: a very gradual taper that allows very uniform results."

Dean,

Shame shame! Try using the proper tool to "ease" the balance hole, (from the
top down). It, too, is a Yamaha tool!<G> If you haven't seen one, I'll be
glad to scan my version.

Best Regards,


Joe Garrett, R.P.T.
Captain, Tool Police
Squares R I

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