verdigris

[John D. Chapman]

I agree with Fred about moving the joint.  On tough cases I have pushed 
the center pin out about one sixteenth of an inch, applied the protek,
turned the flange over, pushed the pin back in continuing to one
sixteenth inch out on the other side, applied the protek, pushed the pin 
back in, then swing the flange back and forth about twenty times.  This
does not take as much time as it sounds.  But the problem will
eventually come back.  Replace the parts whenever possible.

Joe, tell us more about Goose Juice.

John Chapman RPT
Wake Forest University
Winston-Salme NC


On Tue, 17 Jul
2001, Fred Sturm wrote:

> I've also had good luck with protek CPL. The trick is to move each joint
> physically _side to side_. For hammer flanges, bump the birdseye against
> each side of the flange, for example. Make sure you can feel the bump
> both ways. Bump it back and forth a couple times. With practice it's a
> pretty rapid process - grab and do a little nervous jerky jerky. Wippens
> and jacks similarly. Just applying, or just applying and swinging them,
> is nowhere near as effective or permanent. Sometimes I reapply and
> rebump side to side. I won't say it always works on every joint, but on
> the majority it has. At least for me. And they've stayed reasonably free
> for a few years so far (after three or four, if the piano isn't used
> much, the friction begins to show up again).
> 	Of course this is a matter of "make it work on a tight budget." If you
> can replace parts, or if rebushing is viable, by all means do so. I
> certainly give my customer no guarantee as to how long and how well a
> Protek treatment will last. 
> Regards,
> Fred Sturm
> University of New Mexico
> 
> Daniel Dover wrote:
> > 
> > --- You wrote:
> > My question is this: is there a solution that anyone knows of that will
> > attack this vertigris
> > --- end of quote ---
> > 
> > Michelle,
> > 
> > As long as the bushings have not been previously  treated with anything else, I
> > have found that Protek does an excellent (and long-lasting) job of overcoming
> > verdigris in action centers. I treated some actions years ago that are still
> > functioning well. Depending on the severity of the verdigris, I needed to
> > re-apply Protek to a handful of parts later on, and perhaps one or two will
> > continue to be a bit stubborn. But, overall, I consider the Protek to be a very
> > satisfactory solution to the problem.
> > 
> > Danny Dover
> > Dartmouth College
> > Hanover, NH
>