Richard, Isaac & euro-gunk

[Isaac OLEG]

Hello,

I've noticed oily residues around the center pin bushings) that turns
to be as soap after years on mainly old pianos. As I never heard of
using anything but Ballistol in these regions (and in my early days
too) I tend to believe that this is old Ballistol , needless to say
the product is not acting as a lubricant anymore.

I've noticed too some kind of greenish stuff, may be probably some
kind of VJ lube Vaseline, mutton tallow, may be colored by the green
of the brass spring. I've been made cautious about the use of mutton
tallow for its acidity that will corrode the spring (indeed acidity
may well leave the spring out of corrosion I guess)..

I have no other idea actually .

Thanks for asking !

Isaac OLEG

Entretien et réparation de pianos.

PianoTech
17 rue de Choisy
94400 VITRY sur SEINE
FRANCE
tel : 033 01 47 18 06 98
fax : 033 01 47 18 06 90
cell: 06 60 42 58 77

> -----Message d'origine-----
> De : caut-bounces@ptg.org [mailto:caut-bounces@ptg.org]De la part de
> Mark Cramer
> Envoyé : jeudi 23 janvier 2003 04:56
> À : caut@ptg.org
> Objet : Richard, Isaac & euro-gunk
>
>
> I'm currently 'r&r'-ing the wips for an August-Forster
> action. The spring
> slots have an amber-colored, paste-like friction treatment
> which has left a
> greenish coating on the springs.
>
> Wait, it's not as bad as you think. The green stuff wipes
> off easily, the
> springs are shiny and smooth, and slip freely within the
> groove. This action
> is eighty-years old, though it looks brand new.
>
> I see no reason to remove the gunk and attempt to replace
> it with something
> else. I'd just like to know what it is, and if indeed there
> are any concerns
> leaving it behind.
>
> I'm sure those of you working with European instruments
> will have an answer,
> especially Richard or Isaac.
>
> BTW, just 3 feet south of where I'm sitting, (on the other
> side of my office
> window), it is approaching 40 degrees below, with a
> wind-chill warning that
> exposed flesh freezes in 30 seconds or less.
>
> You would think I was typing this from the International
> Space Station or
> the South Pole, but alas it's just Manitoba in January!  :>)
>
> Mark "happy to have an 'inside' job" Cramer
> Brandon University
>
>
>
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