[Amps] Transformer varnish removal

[on4kj]

----- Original Message ----- 
From: <peter.chadwick at Zarlink.Com>
To: "R.Measures" <r at somis.org>
Cc: "AMPS" <amps at contesting.com>; <k7fm at teleport.com>; <ka1xo at juno.com>;
<amps-bounces at contesting.com>
Sent: Wednesday, January 21, 2004 10:12 AM
Subject: RE: [Amps] Transformer varnish removal


>
> Rich said:
>
> > Tomcat spray also works well for pre-paint etching of aluminum
>
> Soemwhat easier and more controllable is caustic soda (sodium hydroxide).

***Ironic talk ON:

 Gives also a nice satin look to aluminium panels.
 We used it this way, in hot boiling water, anno 1958.
 Not aware of the danger ..........! As we were just stupid youngsters.
 Its different nowadays since it seems to be a privilege of some very
intelligent big CHIEFS...
 without  any exeption.

***Ironic talk OFF:


> Readily available (or at least was - I wouldn't bet on it still being so
> with the modern environmental police) for drain cleaning - I believe a
> proprietary name in the US is 'Drano'.
>
> On some alloys, it leaves a blackish shading: a dilute nitric acid dip
gets
> rid of that, but somewhat easier is to use a cloth well soaked in vinegar.
>
> The exercise is best done in a well ventilated place because hydrogen is
> given off.
>
> 73
>
> Peter G3RZP
>
>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>