[Amps] Ham sells fine grit thing to clean contacts

[Pete N4KW]

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 at contesting.com] On Behalf Of Charles H
> Sent: Monday, August 17, 2015 12:10 AM
> To: Tom Osborne <w7why at frontier.com>; amps at contesting.com; w5ifp at 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 at frontier.com
>> To: amps at 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 at gvtc.com
>>>
>>>
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