[Amps] Ham sells fine grit thing to clean contacts

[Pete Smith N4ZR]

The Caig Laboratory chemicals - DeOxIt and Moving Contact Lubricant 
(MCL)  - are also great for restoring conductivity of any contacts.  I 
have some Jones plugs at my station entrance that go flakey every few 
months, and a few drops restores them like new.

73, Pete N4ZR
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On 8/17/2015 8:33 AM, George wrote:
> Charly and the group,
> Using files/sandpaper/emery cloth/etc for contact cleaning is a bad 
> idea for reasons already cited.  Alcohol with paper/business cards 
> works for light cleaning.  If more vigorous cleaning is required I 
> would suggest getting a contact burnisher.  These are available from 
> electronic supply houses and eBay.
> 73, George
> W2GS
>
> On 8/17/2015 12:10 AM, Charles H wrote:
>> 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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