pinblock drilling

[J Patrick Draine]

Clyde Hollinger wrote:

> Friends,
>
> I've been servicing a 1978 console that developed loose tuning pins over
> the past several years, pretty much evenly across the piano.  I decided
> as a first course of action to drive all the pins a smidgen deeper.
> That worked pretty well, but I got the distinct impression as I was
> going along that the tuning pins were hitting bottom in the holes.  A
> pretty good whack didn't noticeably move some of them.
>
> Is this possible?  Has anyone had opportunity to notice if a factory has
> ever drilled the pinblock on a vertical too shallow?
>
> Regards,
> Clyde Hollinger

Yes indeed! Pretty annoying, isn't it! Another good reason to get out the
tilter, and give it the CA treatment.
Also, many Wurlitzers have very high coils, but if you drive them deeper,
the string wraps over the coils, and bass string breakage becomes a real
possibility.

Patrick