At 03:59 PM 25/12/2002 -0800, you wrote:
On 12/25/02 15:41, Brett I. Holcomb wrote:
My understanding that using the pencil eraser was done to clean the contacts, not give it extra conductivity. We used the eraser on boards that were exposed to chemicals that created Silver sulfide deposits blackening the contacts.

from Net Llama!:
[8-<]
" Graphite is an insulator, not a conductor.  Pencil eraser is also an
If we're discussing -electrical- conductivity (there are other
kinds:), then, according to
http://mineral.galleries.com/minerals/elements/graphite/graphite.htm
'Graphite is a good conductor of electricity.'
I stand corrected, however i still think its a bad idea to run an eraser over the contacts, since pencil erasers are no longer pure rubber, but some other composite.
I have for years used, that which we used to use in the labs, which is pharmaceutical alcohol.

Keith Antoine


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