verdigris

[Daniel Gurnee]

on 7/18/01 7:54 PM, David Graham at dcgrpt@earthlink.net wrote:

My Contact cleaner (not CRC) contains carbon tetrachloride which was banned
from fire extinguishers and some cleaners several years ago because it was
believed to cause severe heart problems.

My contact cleaner lay dormant for some time as a result but the recent
letter relating the use of CRC contact cleaner for easing action centers
engendered an experiment on my own piano with success. So far, I see no down
side.

The admonition to use the product with adequate ventilation is well advised.

Dan Gurnee, HSU retired

> Hi all- there IS a way to quickly solve action center problems, when the
> only problem is verdigris. Richard Anderson,RPT, found this some years ago,
> and I have used it successfully a number of times. Spray "QD electrical
> contact cleaner" from CRC Industries on the action centers, move the part
> back and forth, and then go on. I have not found any return of sluggishness,
> even when the parts were completely frozen. It leaves no visible residue,
> though I usually spray it outside due to the odor. It doesn't take much, and
> usually makes the affected center a bit freer than I would like, but it is a
> perfect solution in cases like this one, where the parts should really be
> replaced anyway, but the customer doesn't have or want to spend the money.
> The piano will be playable, the cost is very low, and when some other
> problem with the parts shows up, (like breakage), you won't be throwing so
> much of your work away. The QD is available in local hardware stores.
> ---
> David Graham <dcgrpt@earthlink.net>
> 
>