WD-50

[John Ross]

Hi Newton,
Your subject heading really had me interested.   I thought it was a new product.

Regards,
John M. Ross

Newton Hunt wrote:

> WD-40 is a petroleum product composed of surfactants, solvents and 1/3
> light machine oil.  It can be used as you describe and may well help
> the situation butt would prefer a very little amount of "Liquid
> Wrench" applied with an artists brush to limit the area of
> application.
>
> The problem with WD-40 is that it most often comes as a spray can.  I
> have a gallon of the stuff in an unpressurized can that I prefer to
> apply with a syringe.
>
> Applying anything that cannot be removed should be done knowledgeable,
> discretely and sparingly.
>
>                 Newton
>
> fwilliam@collegeclub.com wrote:
> >
> > List,
> >      I have a question about WD 40 spray.  I recently tuned an 1885
> > upright that had suffered from string breakage and 20 years of non-tuning.
> > In accordance with the manuel, I taped a thick paper over the pins and
> > carefully sprayed WD 40 onto the pressure bar and upper bridge.  No
> > strings broke as I tuned this piano.  This worked well, but I'm very
> > cautions about WD 40 and pianos.  Am I right in my concern?  Should I do
> > this more regularly on 80+ year old pianos to reduce the risk of string
> > breakage?
> >
> > Tomarrow I'll be tuning another upright that was never pulled up to A440
> > pitch.  It was built in 1936 and hasn't been tuned for about 5 years.
> > There is some rust on the pins and strings, but I've seen and tuned worse.
> > Do you folks think I should lubricate the bridge and pressure bar of this
> > piano?
> >
> > -Fritz William Herrick, piano technician
> > Greenville ME, Montreal PQ.
> >
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