A pencil eraser works best for cleaning contacts.
--------------------------------------------
On Mon, 8/17/15, Pete N4KW <n4kwpete@centurylink.net> wrote:
Subject: Re: [Amps] Ham sells fine grit thing to clean contacts
To: amps@contesting.com
Date: Monday, August 17, 2015, 10:13 AM
Agree David, a "burnishing tool" is
designed to clean various electrical
contactors/relay contacts.
I have a couple of them, and not sure, but would think that
Grainger
might carry them.
73, Pete N4KW
On 8/17/2015 1:19 AM, David Harmon wrote:
> Get a relay burnisher and forget paper....it can snag
in the contacts and
> can insulate them.
>
>
> 73
>
> David Harmon
> K6XYZ
> Sperry, OK
>
> -----Original Message-----
> From: Amps [mailto:amps-bounces@contesting.com]
On Behalf Of Charles H
> Sent: Monday, August 17, 2015 12:10 AM
> To: Tom Osborne <w7why@frontier.com>;
amps@contesting.com;
w5ifp@gvtc.com
> Subject: Re: [Amps] Ham sells fine grit thing to clean
contacts
>
> 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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