Let-Off Button Installation Secrets

[David Love]

I've found the holes to generally be square.  It is easy, however, to get
them started on angle if you are not careful.  The best method I've found is
to screw the let-off screw all the way up (which is an easy way to take off
the old one).  Hold the new button up against the bottom of the rail firmly
so it is flush to the surface and screw the let off screw back down into the
button until the button starts to turn on its own.

David Love

----- Original Message -----
From: "Farrell" <mfarrel2@tampabay.rr.com>
To: <pianotech@ptg.org>
Sent: October 11, 2001 5:57 AM
Subject: Let-Off Button Installation Secrets


> Hi gang. I am rebuilding an upright let-off rail: new let-off screws,
> buttons, and felt punchings. Is there any secret to installing the button
on
> the adjustment screw such that its cylindrical axis is parallel with the
> screw shaft so that there is no wobble when turning the adjustment screw?
No
> wobble is critical for any fine regulation. The holes in the buttons
> (Pianotek) I am using are pre drilled. I should think that if the holes
are
> put in square, you are guaranteed to end up with no wobble. I have some
> wobble. Am I forcing the installation to go crooked? Or are some of the
> pre-drilled holes not square to the felt surface? Do I need to make my own
> dowels and drill them myself??? Thanks.
>
> Terry Farrell
>
>