Cleaning air caps

[Edward Swynar VE3 CUI]

Will...

I once "...inherited" a bunch of old air variable capacitors that were the
ultimate in "grunge"...I simply placed them into a pot containing a mixture
of boiling water & pure lemon juice, & let things "cook" for a few
minutes...

I was amazed at how clean they became---but brother, they sure needed
lubricating after this "clean up"!!

NOTE: Do NOT boil anything coated with copper therein! They acid in the
lemon juice removes just a trace (copper oxide?) which will then BOND to
ferrous metal parts on anything else you might "cook" in the mixture
thereafter! I did just that when I boiled clean a roller inductor (1/4"
edge wound copper ribbon), then dropped in a vintage Cardwell variable
capacitor---the end frames now have a nice coppery sheen to them! (perhaps
not totally undesirable in all instances!)...

~73~ Eddy VE3CUI - VE3XZ




----------
> From: Will White <wcw at USWEST.NET>
> To: BOATANCHORS at LISTSERV.TEMPE.GOV
> Subject: Cleaning air caps
> Date: March 19, 1999 12:16 AM
>
> The plate cap on one of my newly acquired TX4-Bs is kinda yucky, has
> some corrosion on it. Is it possible to safely clean it up? I have most
> of the usual household and electonics cleaners, just unsure which to
> use, or how rough to get with it.
> --
> Will White, KD7BFX
>
> to reply, please click this link mailto:wcw at asu.uswest.net
>
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