[pianotech] Balance rail bushings

[John Ross]

I went to one of the free translation sites, and this is what I got for that 
tool.

You can mill from resonance ground milling machine RBF 206 with the 
resonance ground milling machine RBF 206 tears in the resonance ground 
exactly, uniformly and quickly, on can cement around subsequently the 
suitable chips. The machine offers following advantages to you: . Adjustable 
milling machine depth . every tear can, with few exceptions, milled become . 
milling machine leaf interchangeable.

John Ross,
Windsor, Nova Scotia

----- Original Message ----- 
From: "Ron Nossaman" <rnossaman at cox.net>
To: <pianotech at ptg.org>
Sent: Sunday, July 12, 2009 9:09 AM
Subject: Re: [pianotech] Balance rail bushings


Gregor _ wrote:
> Getting the old bushings out: I used to use steam, but I heard from
> collegues that it´s much easier and quicker to use ethyl alcohol
> (spiritus). Never tried that myself. But they say that subsequent
> steaming is not necessary. The felt will just dissolve from the wood.

Try that with Titebond installed bushings.


> Installing the new felt: thread the felt thorugh the slot between key
> and key button and push it with a needle from the key balance hole
> upwards. I apply a thin layer of TiteBond to the felt that is sidewise
> of the key button and pull the felt from above. I use clamps and no
> cauls. Look here for these clamps in the catalog (item no. 42.05.00).

I was instructed to do it this way 35 years ago, and
discovered immediately just how miserable those clamps are. As
soon as I could, I made my first set of cauls from aluminum,
like the 42.05.10, only not double ended. They weren't
available anywhere I was aware of, so making them was my only
choice. Still using them, and the other sets I've bought since.


> http://www.pianoteile.com/kataloge/pdf/Werkzeugkatalog.pdf

So what's the 40.00.00 with the big teeth on page 2.09? Looks
lethal, but interesting.
Ron N