restringing and rosin

[Warren Fisher]

SGrossner@aol.com wrote:
>
> Dear List:
>
> I am about to restring a Chickering grand. The block is good, and I intend to
> use 4/0 pins. I was set to ream for new pins, when I noticed the holes are
> tapered so as to get tighter the further down you drive them. The reamer I
> have, a spoon bit, would eliminate that taper. Something I hesitate to do.
> But the real question is this: I have heard that a bit of rosin on each pin
> goes along way to eliminating creaky or jumpy pins. Does anyone know what
> kind of rosin to use, and where to get it? I would also appreciate an opinion
> on the benefit or detriment of reaming these tapered holes. Much appreciated.
> Regards, Sam Grossner, chicago.

Sam,

The tapering probably went a long way toward allowing the pins to slip,
because the wood is not pressing equally throughout the length of the
pin.  I would straighten it out without a qualm!  Make sure you use a
3/0 reamer and not a 4/0.  I'm assuming 2/0 is what you are removing.

Hope this helps,

Warren



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Warren D. Fisher
fish@communique.net
Registered Piano Technician
Piano Technicians Guild
New Orleans Chapter 701