Mark,

I mentioned de-oxit D5 as a contact cleaner. Seems to work for me , well you know I have no real proof.

Hard to clean inside female spade connectors. I try little folded bits of fine wet and dry paper. Purple scotch Brite, little wire brush.

I’d like to try those glass fiber pens , haven’t yet.

Alistair 

ps I avoid dipping connectors into any kind of acid to remove tarnish.

> On Apr 10, 2020, at 3:10 PM, Mark Belanger <mbelanger@gmail.com> wrote:
> 
> Fascinating stuff. I can think of number of uses for this stuff.
> 
> Though, this begs the question, what is the best way to clean contacts? A
> combo or mechanical and chemical, I'd imagine.
> 
> 
> -MB
> 
> 
> On Fri, Apr 10, 2020 at 12:33 PM Neil N <musomuso@gmail.com> wrote:
> 
>>> As I understand, stabilant ain’t as much a cleaner as a contact
>> enhancer. ....
>> 
>> Thanks for that link Alistair. That's an important difference to note;
>> I see what you mean:
>> 
>> ======
>> 
>> " Stabilant 22 is an electrically active material which stays resident
>> within a contact-pair, there enhancing conductivity without causing
>> electrical leakage between adjacent contacts. Although Stabilant 22
>> does have a detergent action it is not sold as a cleaner, just as it
>> has a good lubricant action but is not sold as a lubricant. Stabilant
>> 22 is used to increase the reliability of contacts. Tenfold to one
>> hundred-fold increases are not unusual. At the present time it is used
>> in many different types of contacts, including card-edge connectors,
>> D-type connectors, MIL-spec connectors, signal switches, etc.
>> 
>> Stabilant 22 is an initially non-conductive amorphous-semiconductive
>> polyoxyethylene-polyoxypropyline block polymer with a molecular weight
>> of about 2800 that, when used in thin films between contacts, acts
>> under the influence of the electrical field and switches to a
>> conductive state. The electric field gradient at which this occurs is
>> established during manufacture so that the material will remain
>> normally non-conductive. Its switching speed is too slow to allow it
>> to be used in the more traditional semiconductor applications;
>> however, this means that signals at frequencies substantially above
>> five cycles per hour will not be modulated by the switching
>> characteristics of Stabilant 22.
>> 
>> Thus, when applied to electromechanical contacts, Stabilant 22
>> provides the wide-bandpass connection reliability of a soldered joint
>> without bonding the contacting surfaces together!
>> 
>> In its undiluted form at room temperature, Stabilant 22 has the
>> viscosity of medium-weight motor oil, although it thins out with
>> increasing temperature, starting to decompose into the two polymers it
>> is formed from at about 240° Celsius. It has a very low vapor pressure
>> and therefore there is no appreciable loss of material from
>> evaporation. It has been in some applications for more than fifteen
>> years without renewal, and it is probably safe to say that in the
>> majority of cases, the equipment on which it is used will be retired
>> as obsolescent before the Stabilant must be renewed. "
>> 
>> 
>> 
>> --
>> Neil n
>> 
>> VE7TBN
>> 
>> 1988 Westy 50º ABA swap: https://tinyurl.com/yap5hpwt
>> 
>> 1981 Westy 15º ABA swap: https://tinyurl.com/y9n4xob8
>> 
>> VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>
>> 
> 
> 
> -- 
> ________________________________________________________________________
> Mark Belanger - mbelanger@gmail.com