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MMD > Archives > December 2008 > 2008.12.24 > 08Prev  Next

"Polished With Black Lead"
By Paul Camps

Hi all,  I'm sure I covered this in a previous posting, but colloidal
black lead is available from Kimber Allen organ builder suppliers here
in the UK.  I  believe there is also a US office.  The black lead or
"graphite" is in liquid form in an alcohol suspension.  It's available
in 1-liter tins; there may be some issue with the mail system as it is
highly flammable.

The material had various applications in organ building, for example,
the sliders in Bar-Slider soundboards, and in player pianos: typically,
roll-drive motor valve sliders.

Where a wooden or even a metal surface was clean, dry and free of
grease, the liquid could be applied with a small piece of felt.  When
dry (which doesn't take very long due to the rapid evaporation of the
alcohol) you simply buff the area with a clean piece of felt, which has
the effect of burnishing the surface to a bright shiny finish.  Areas
not requiring graphite could be masked with tape.

The substance used here in the UK under the trade name "Zeebo" or
"Zeebrite" is not ideal for anything other than fire grates, etc.
Odd, though, it's been around for donkey's years, just like hot glue.

Merry Christmas to you all and a happy new year.
Paul Camps

(Message sent Wed 24 Dec 2008, 11:56:09 GMT, from time zone GMT-0500.)

Key Words in Subject:  Black, Lead, Polished

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