[pianotech] Fixing stripped screws

[paul bruesch]

I have a customer with a S&S whose action is very gummy with verdigris. The
hammers still go up and down, albeit very slowly. Customer can't/won't
afford to do the work the piano really needs (i.e. rebuild), so I'd like to
try something like this.

Can someone provide more info to the list about this procedure? e.g.
spray/pour it over the whole stack? How much heat would one use? e.g. 'til
it smokes? How long has anyone been doing this? Less than a year? Three
years? (to get SOME idea of how long it may last.)

Thanks,
Paul Bruesch
Stillwater, MN

On Sat, Mar 28, 2009 at 10:10 AM, Ryan Sowers <tunerryan at gmail.com>
wrote:<snip>


> Darrel Fandrich recommended his new treatment for Verdigris at the
> California State Conference in Burbank. He's using Ballistol followed by a
> heat gun. It will smoke so do it outside. (Darrel says he likes the smell)
> I tried it on an old Mason where every single flange in the action was
> sluggish (hammers, wippens, jacks and rep levers!) and protek wasn't doing
> the trick. On an action that needs to be rebuilt anyways I figure there's
> not much to lose. Kinda like doping a pinblock. The piano went from being
> unplayable to playing amazingly well! It will be interesting to see how long
> it lasts.

</snip>
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