Ink eraser to clean edge contacts or otherwise is a bad idea due to the
outgas of an acid compound and Sulfur. Rub it on a surface and smell.
Proper cleaning is best done with a soft cloth and contact cleaner. If it
is a tight space there is a lint free swab made specifically for cleaning
rotary video heads that, with a small application of contact cleaner applied
to the swab, works well. Excessive and random sprayed contact cleaner can
become corrosive.
For dry contacts, a strip cut from a white index card works well. Just use
a small amount of pressure to bring the contacts together, grasping the
index card strip, to wipe between the contacts.
For rotary switches and pots, a cleaner which contains some lubricant is
generally satisfactory. GC Chemicals has made some good stuff in the past.
I've a can that is probably 10+ years old, hence this gives one a reference
to the small amount that I use in doing regular repair and restoration work.
I've also used Cramolin, both Red and Blue, but only at 1% solution. The
other 99% is Freon TF. I think the stuff is no longer available due to
environmental reasons. Perhaps, as I understand, DeOxit is a good
substitute. Again, least is best.
73
Bob, K4TAX
----- Original Message -----
From: <w8au@sssnet.com>
To: <tentec@contesting.com>
Sent: Sunday, July 15, 2012 12:11 PM
Subject: Re: [TenTec] Burnishing tool?
At 11:13 PM 7/14/2012, Richards wrote:
Does anybody use a burnishing tool to clean contacts? I seem to recall
RadioShack selling such a thing years ago. Not having one, I sometimes
use an old ink eraser. Are there better ideas for this?
Nothing better, but if you need something in a hurry, use a
clean dollar bill. Very rugged, no shedding, and has a slightly
coarse surface. (need I add -- pull through closed contacts, not push?)
:-)
Works well.
Perry w8au
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