Sizing Guide Rail Bushings

[Wolfley, Eric (WOLFLEEL)]

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Hi All,

I've used the following method and tool for the past few years and it works
beautifully.

I bought a 40W soldering iron at Big Lots for $1.99, trimmed the bevel off
the tip and swaged (squeezed/pounded) a # 7 bridge pin into the end. Used in
conjunction with a temperature control (I like the one Pianotek sells) you
can iron size the bushings either in or out of the piano. I then give them a
squirt of TFL-50 dry lube. BTW, I've been using the TFL-50 for emergency
easing of damper bushings without removing the action also. You can use the
little tiny spray tube that comes with it to get down between the dampers
and spray the wire (while raised) and the bushing at the same time. I don't
know if it chases moisture out and lubes or whether it just slicks it up
enough, but it sure works great.


Eric

~~~~~~~~~~~~~~~~~
Eric Wolfley, RPT
Head Piano Technician
Cincinnati College Conservatory of Music
University of Cincinnati
~~~~~~~~~~~~~~~~~

> -----Original Message-----
> From:	Fred Sturm [SMTP:fssturm@unm.edu]
> Sent:	Thursday, June 22, 2000 11:05 AM
> To:	caut@ptg.org
> Subject:	Re: Sizing Guide Rail Bushings
> 
> Avery,
> 	I saw Brian DeTar demonstrate using a heated wire, chucked in a
> soldering iron, similar to the setup Pianotek sells for key easing with
> heat (with temp control). Looked like a great idea, though I've never
> got around to making one. If I did, I think I'd just take a piece of
> round brass stock the right size to fit in the tip, drill a hole in the
> end, and hammer in the appropriate size pin (friction fit). I haven't
> rebushed a rail in a while, so haven't bothered to do it yet.
> 	How do you know it's right? One way is to take a straight wire and
> run
> it through each bushing. If it drops easily of its own weight, you're in
> good shape (assuming it isn't too sloppy). 
> 
> Fred Sturm
> University of New Mexico
> 
> > *********** REPLY SEPARATOR  ***********
> > 
> > On 6/22/00 at 9:08 AM Avery Todd wrote:
> > 
> > >List,
> > >
> > >Any opinions on the best way to size these new
> > >bushings?
> > >
> > >I've heard of using a heated damper wire;
> > >
> > >An alcohol/water treatment with bridge pins of the
> > >appropriate size (same as damper wire? slightly
> > >larger?).
> > >
> > >Any other methods?
> > >
> > >How do you tell for sure they're correct "before"
> > >you reinstall the guide rail?
> > >
> > >What about lubrication? Protek?
> > >
> > >Rather elementary questions, I know but I just
> > >wanted to get some opinions from others who've
> > >probably done this a lot more than I have.
> > >
> > >Thanks.
> > >Avery
> > 
> > David M. Porritt
> > dporritt@swbell.net
> > Meadows School of the Arts
> > Southern Methodist University
> > Dallas, TX 75275

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