it will be a few weeks until I get whatever this man sells, but it is very
unlikely sandpaper coated with silica only.
"EmEry" Emery on paper for fine grinding is mostly aluminum oxide for whatever
good or ill that means.
A file makes me nervous due to the temptation to push too hard.
I have used white typing paper which works on very little oxidation/corrosion
but can be seen as a dark smear on the white paper which tells you are getting
something off the contacts. Fully black silver contacts usually will not come
clean enuf with just paper.
I have not tried spray-on contact cleaners, sold by that naming, nor carbon
tetrachloride (yes I can buy that). I have used commercial silver polish, for
tableware and granny's candelabra, on silver coax sockets and that works good
on medium tarnish but needs lots of rubbing and the really black tarnish
resists that polish about half good.
I am open to good suggestions. Charly
Date: Sun, 16 Aug 2015 18:28:02 -0700
From: w7why@frontier.com
To: amps@contesting.com
Subject: Re: [Amps] Ham sells fine grit thing to clean contacts
Someone told me once that strips of paper from a brown paper bag works
good for cleaning relay contacts. 73
Tom W7WHY
On 8/16/2015 6:13 PM, Jim Hargrave wrote:
Sandpaper is a no no on relay contacts. It leaves minute sand
particles imbedded in the contacts, especially silver plated ones.
Use a metal contact file or good grade of extra fine Emory cloth.
73, Jim - w5ifp@gvtc.com
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