/steinway B

[Porritt, David]

This comes up from time to time.  Why would you glue, shellac or put
anything sticky on the guide rail?  You'll curse yourself the next time
you have to rebush the rail.  I have never glued the felt and have never
had a bushing move.  Of course this is with the single felt bushings and
I use the felt that's made to fit when you just pull it through the
hole.  When I encounter those awful double bushed rails, I replace them
with new ones and drill for the single felt.

 

But, glue???

 

dp

 

 

David M. Porritt, RPT

dporritt at smu.edu

 

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On
Behalf Of paulrevenkojones at aol.com
Sent: Tuesday, August 05, 2008 4:01 PM
To: pianotech at ptg.org
Subject: Re: /steinway B

 

Ric and Les:

Actually, after plugging and redrilling, and using shellac to seal as
well as in the guide hole, if you size the new cloth with a bridge pin
and 50/50 alcohol/water, the alcohol will slightly dissolve the shellac
in the hole and create a bond with the bushing cloth. No need to glue in
the cloth.

Paul

 

 

-----Original Message-----
From: Richard Brekne <ricb at pianostemmer.no>
To: pianotech at ptg.org
Sent: Tue, 5 Aug 2008 1:27 pm
Subject: /steinway B

Thanks for info. I would plug and redrill with trepidation, but that
seems the logical choice. 
  les 
 
Hi Les 
 
Not to worry its quite easy. Might I offer a couple pieces of advice in
doing this that may save you a bit of ergelse ? First, often (most
times) the underside of the guide hole is beveled. You can pre-bevel
your plug to accommodate this. Secondly, and this goes rather hand in
hand with the first, make the plug flush with the bottom of the guide
rail when you glue it. You can easily sand smooth from the top and dab a
brush of Shellack over the top when finished. Third, swab the inside of
the newly drilled hole with shellack just before you run your bushing
cloth through. It will let dry for a bit and trim excess with a very
sharp razor knife... I like buying those use and throw away exacto like
thingys available at most hardware stores myself. 
 
I have it written somewhere, but I cant find it right off hand, that the
diameter of the bushed hole should be about a half a mm larger then your
damper wire. So you want to figure your bushing cloth thickness and this
into the diameter of the hole you drill. 
 
I suppose you know all this already... but thought it might be good to
throw it out on the table anyways. 
 
Cheers 
RicB 
 
 

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