[pianotech] bearing point problem

[Joe Goss]

Hi Jonathan,
With action removed and hankie in hand, needle oiler filled with GJ in the 
other, treat upper bearing points. Needle oiler tip above pressure bar first 
as the oil may run down and treat the lower point as well.
The action is removed only to keep the dampers from getting wet.
Use the rag to keep excess from running onto bass windings.
{my testing has shown no damage if there is a spill onto the windings Just 
taking extra caution}
Joe Goss BSMusEd MMusEd RPT
imatunr at srvinet.com
www.mothergoosetools.com
----- Original Message ----- 
From: "Jonathan Golding" <jgmdpiano at gmail.com>
To: <pianotech at ptg.org>
Sent: Wednesday, December 23, 2009 11:02 AM
Subject: [pianotech] bearing point problem


> Greetings list,
>
> I recently tuned an old heintzman upright which game me lots of
> problems and so I'm seeking some advice for future tunings.
>
> I've tuned it in the past with considerably less headache, but this
> time it had been put in storage for a while and then moved back to its
> home. There was a lot of rust and grime across the bearing point and
> on the strings themselves which wasn't there before. I put protec on
> the strings (where they touch the bearing point) but to no avail. I
> guess it wasn't enough to cut through all the crud which was
> preventing them from moving properly. Several years ago, I used liquid
> wrench to do this kind of thing which I think worked better at cutting
> through both the rust and also lubricating, but I didn't like that it
> would leave a black streak across the agraffe or bearing point area.
>
> Any thoughts on something that I could use which would be safe, clean
> and effective at cutting through rust while lubricating all at the
> same time?
>
> Or better yet, any thoughts on how do deal with this situation-
> there's nothing worse than a string that doesn't move until a quarter
> turn of the tuning pin only to move a quarter tone sharp.
>
> Thanks and happy holidays,
> Jon