Steinway upright verdigris

[BobDavis88 at aol.com]

In a message dated 11/29/2006 8:47:16 PM Pacific Standard Time, 
davidlovepianos at comcast.net writes:
Perchloroethylene (PERC or dry cleaning fluid) seems to work but it is 
considered a highly toxic substance. 
I have tried perchlorethylene (and many other solvents) by rinsing, soaking, 
blowing, and agitating in an ultrasonic cleaner. The centers 
1) get looser
2) never feel right and 
3) ALWAYS tighten back up. Sooner or later, but always.

I no longer want to spend the client's money to combine effort with risk, and 
just chuck the parts.

from Wikipedia:  In the early 20th century, [perchlorethylene] was the most 
effective available treatment for hookworm.  [Mmm, tasty....]

Bob Davis
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