[R-390] Re: corroded tube pins

[ELDIM]

The PINS mady be of a Tungsten or Tungsten alloy.
I've run across the same corrosion or is it severe oxidation.
In those cases I have used a fine wire bush (not those cheap brass on that
you find from abroad), but thie good high density ones that are small on a
wooden handle. It is still difficult to reach the inside area of the tube
pins, in which case mild scrapping with a X-ACTO Knife blade, Razor Blade,
or I use a Medical Scapple which also does the trick.  Just scrap gently at
an angle as not to gouge or nick the pins.
Merry Christmas, Great Joy Happiness and Pprosperity & Good Health to ALL.
It's Been a FUN YEAR with all the great lists, and comments.
73
Glen Galati, KA7BOJ
Tacoma, WA
eldim at att.net
----- Original Message -----
From: "Bill Hawkins" <bill at iaxs.net>
To: <r-390 at mailman.qth.net>
Sent: Wednesday, December 21, 2005 1:25 PM
Subject: RE: [R-390] Re: corroded tube pins


> The mild acid is carbonic acid, from the CO2 added to the
> flavored water to make it tickle. Any carbonated beverage
> will work.
>
> Does it work on corroded tube pins? Depends on what corroded
> them. Pretty sure the pins could fall off without affecting
> the vintage vacuum.
>
> Anybody know the base metal and plating of tube pins? It
> probably varies with the vintage.
>
> May the sun rise higher in the sky for the next six months,
> Bill Hawkins
>
>
> -----Original Message-----
> From: r-390-bounces at mailman.qth.net
> [mailto:r-390-bounces at mailman.qth.net]On Behalf Of DQ
> Sent: Wednesday, December 21, 2005 2:09 PM
> To: r-390 at mailman.qth.net
> Subject: [R-390] Re: corroded tube pins
>
>
> This offered as a possible 'wives tale' solution and NOT from a
> scientific viewpoint. I'm hesitant to offer this, and I hope I'm
> not making myself appear foolish by posting.
>
> You might also try bundling them together with a heavy rubber
> band and then standing them up in a shallow pan with Coca-Cola
> in it. My wife has used this trick on various things over the
> years without harming the base object. I have also seen
> something on TV about it. As I recall it has to do with a very
> mild acid contained in the Coke formula.
>
> ~ Quig ~
>
> --- Dan Merz <mdmerz at verizon.net> wrote:
>
> > Scott,  I suggest shoving them in and out of a loose tube
> > socket a few
> > times,  applying a little deoxit to the tube socket and
> > putting one in the
> > deoxit laden tube socket and taking it out and testing it on a
> > tube tester.
> > If it tests ok,  that may be all that's necessary.  If the
> > pins are so badly
> > corroded that the vacuum is compromised,  you'll know right
> > away.  Good
> > luck, regards,  Dan.
> >
> > -----Original Message-----
> > From: r-390-bounces at mailman.qth.net
> > [mailto:r-390-bounces at mailman.qth.net]
> > On Behalf Of Scott Bauer
> > Sent: Wednesday, December 21, 2005 7:06 AM
> > To: R390 List
> > Subject: [R-390] corroded tube pins
> >
> >  I bought some " NOS " OA2's on ebay. I know, you get what you
> > pay for.
> > Anyway, every pin on every tube is heavily corroded. Usually,
> > I scrape them
> > off but I bought 11 of them and was hoping for an easier
> > solution.
> >
> >  I wonder if there is any type of solution one could soak the
> > pins in to
> > remove the corrosion?  Baking soda and water ?
> >
> >  Thanks, Scott
> >
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