[pianotech] X-Ratcheting Counter Bearing Shim

[Ron Nossaman]

Bruce Browning - The Piano Tuner wrote:
> Ron,
> I thought this thread was for an interim fix of "pinging" strings whilst
> tuning.
> How does heatshrink tubing increase the tension/length of the string, as
> the original posting was inplying, to move the bearing position on the
> string?
> Or was this to achieve something else?


The problem is the friction on the understring felt. Relieving 
that with applications of Protek, brass inserts, weasel 
grease, heat shrink tubing, or fairy dust, would make the 
problem go away. Alternately, it could be fixed for real by 
eliminating the problem altogether rather than dodging it.
Ron N