Verdigris fix

[thepianoarts]

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Dale and list,

Several years ago,  a  tech from a neighboring chapter suggested 'Kutzit' (
as in stripper) as a possible treatment  in treating vertigris.  I have used
it on several nasty vertigris Steinways,  grands and verticals, and I am
completly satisfied with the results.
   I would not suggest that a tech use it, unless they have had some
experience with conventional methods of treating sluggish flanges.  IMHO, it
should be reserved for vertigris  only, and then after all other avenues
have been considered, and rejected. (As in replacment of parts)
     A disgruntled customer, or a  technician looking for a reason to prove
once and for all, that your an oaff, could make one's life a bit unpleasent,
for using this unconventional treatment.

Here is how I proceed....

#1
I use the 1875 watt hair dryer to bake out the H2O from the flanges and
bushing cloth, which has been trapped by the vertigris, or trapped by other
"treatments" (oils etc).  I would not suggest a heat gun. This could damage
the bushing.
    The moisture can be seen coming to the surface of the flanges. Fry until
dry.  At this point, the flanges should be 'free'. (If left alone, at this
point,  the sluggishness will return)

#2
When you are satisfied that the H2O level has been reduced enough, ( in that
they are free) and while the flanges are still hot, I apply the lovely blue
fluid, with an eye dropper.

#3
The next step is to break up the corrosion, by applying pressure to the
flanges,  in each of the four directions,  while moving the parts. (For
example, holding a handfull of hammers, and while pushing them through their
arc, press gently to the left...right....pull up...push down)

#4
Let them alone for a day or two. If they are good enough, friction wise, I
then treat the flanges with silicone / naptha.  The silicone chases the H2O,
and keeps it from comming back.


Dan Reed

Dallas, Texas

on 10/4/01 10:22 PM, BEATRIX ERWIN at erwinpiano@msn.com wrote:

List

 I still say that  mineral oil or silicone won't cure verdigris. I've tried
the silicone and toluene as Yamaha directs and it works in some sluggish
flange cases  but is also only a temporary fix for verdigris.  The mineral
oil I've not tried. How bout some feedback from you all with extensive
experience with it. Be specific.

 I'm still waiting for the feedback from Dan Reeds post last week



Best- Dale Erwin 



 
----- Original Message -----

From: Allan L. Gilreath, RPT

Sent: Thursday, October 04, 2001 7:20 AM

To: pianotech@ptg.org

Subject: RE: naphtha + mineral oil


Terry,

The original research found this to work better at a concentration of 8
parts naphtha to 1 part silicone.  There are other variables that you can
get into but I've been working with a chemist on some of these particulars.
But maybe I can play with that more after next summer.

Allan

-----Original Message-----
From: owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]On Behalf
Of pianolover 88
Sent: Wednesday, October 03, 2001 1:16 PM
To: pianotech@ptg.org
Subject: Re: naptha + mineral oil


I'm waiting for my order of 100% Silicone Liquid, from Baldwin. This will be
my substitute for the outrageously priced Protek! This is cut 20/1
naptha/silicone.

Terry Peterson
Precision Piano Service
Torrance, CA


>From: "Howard S. Rosen" <hsrosen@earthlink.net>
>Reply-To: pianotech@ptg.org
>To: "Pianotech" <pianotech@ptg.org>
>Subject: naptha + mineral oil
>Date: Wed, 3 Oct 2001 12:53:14 -0400
>
>
>Date: Sun, 9 Sep 2001 07:40:29 -0400
>From: "Phil Bondi" <tito@PhilBondi.com>
>Subject: Re: naphtha + mineral oil
>
> >     A number of years ago, I worked in a piano shop where the we used a
> > mixture of mineral oil and naphtha to lubricate sluggish flanges.  What
>is
> > anyone's opinion on this?
> > Gary McCormick
> >
>..I'm really glad someone else mention this before me..yes..I use this, and
>it works just fine...4 parts naphtha-1 part Mineral oil.
>
>whew,
>roo(k)
>___________________________________
>
>I agree with the roo(k). I've used this for 30 years with great results and
>no adverse effects. However, my formula is 8 parts naphtha to 1 part
>mineral
>oil. My feeling is that 4 to 1 might be too oily and might gum things up. I
>don't know for sure...just a gut feeling.
>
>With all the praises for Proteck, I too never felt that it worked any
>better
>than my formula above. Amazing, isn't it, how we techs differ in our ideas,
>approaches, opinions,methods etc. ?
>
>Howard S. Rosen, RPT
>7262 Angel Falls Ct.
>Boynton Beach, FL  33437
>
>561-737-2057
>hsrosen@earthlink.net
>


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