[pianotech] balance hole break-loose noise

[Ron Nossaman]

On 9/5/2011 12:54 PM, William Monroe wrote:
> I'm told it works but haven't done it.

It works, but it's a one off low expectation sort of repair. Not for a 
whole set.


> I like the reliability of the
> Onesti system in that with care, it will absolutely maintain the
> position of the balance rail hole.

I don't own the Onesti system, but it looks like a nice setup. I replace 
balance rail holes with a mortised in blank, and drill them after 
installation with a jig made from the key before cutting the mortise. I 
started doing this with the first shoe installation when I 
de-accelerated an action to stiffen the keys, and decided it works as 
well as anything else for balance hole repair too. I since found that I 
could drill from the top, through the original hole to drill the shoe, 
then ream for thickness afterward - but that's a different discussion.

Ron N