Regulating rail treatment

[Mike Swendsen]

A number of years ago I found an old power supply out of a pinball machine.
One of it's outputs was about 12 volts.   I hooked up a set of leads off of
that and made a handle that had two thin flat metal ( strapping steel)
pieces.. one on either side of a wooden block.  These were made to be able
to fit in between flanges.  With this system you can dead short electricity
through a frozen center pin, heating it, and freeing it.  It has since been
used to free regulating screws.  Actually, it works better for that.     If
you leave the 'pin zapper' hooked up too long it will actually scorch, the
flange bushings.  But it is fast.
Mike

-----Original Message-----
From:	owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org] On Behalf Of
Dick Powell
Sent:	Sunday, September 13, 1998 5:45 PM
To:	pianotech@ptg.org
Subject:	Re: Regulating rail treatment

Bill, I heat them with a solder gun or a heat gun, trying not to scorch
the wood.

Dick--Louisiana
On Sun, 13 Sep 1998 18:06:10 EDT BSimon1234@aol.com writes:
>In a post the other day, I mentioned that I treated frozen regulating
>screws
>on let off regulating rails with WD-40, my only piano use for this
>product.
>
>It now occurs to me to ask - "Is there a better treatment or technique
>for
>freeing up these frozen screws?" ( I hope someone else has experienced
>this
>problem! )
>
>I would love to hear any suggestions other than "Send the old rail to
>Renner
>for duplication, should cost your customer less than $500.00, your
>labor
>included!"
>
>Thank you,
>
>Bill Simon
>Phoenix
>

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