Re: [TCML] Voltage rating of two pack clear automotive paint

[mike hollingsworth <megavolts_61@xxxxxxxxx>]

Grainger carries Sprayon (formerly known as Krylon) insulating varnish.  It is intended for motor winding, but I have used it with great results up to a ten inch coil.  The one thing I would suggest is that if you live in a humid area and are winding onto a pvc former, you make sure it is good and dry before applying the varnish, so you don't chance sealing in any moisture.  
Mike
hopefully this link works...haven't tried sending one to the list.
http://www.grainger.com/Grainger/SPRAYON-Clear-Insulating-Varnish-1D268?Pid=search


________________________________
From: Jim Lux <jimlux@xxxxxxxxxxxxx>
To: tesla@xxxxxxxxxx
Sent: Monday, October 10, 2011 6:54 AM
Subject: Re: [TCML] Voltage rating of two pack clear automotive paint

On 10/9/11 6:46 PM, David Petzer wrote:
> Hi all,
>
> I have recently wound a few small resonators, to make a few SSTC's.
> They are wound on normal PVC and also on glass.
>
>
> I am contemplating spraying them with Two Pack Clear the type you
> would use on a car or truck as a final coat. My motivation is really
> cost, accessibility and strength of the paint.
>
>
> Does anyone know if the thinners present in the paint will dissolve
> or degrade the insulating coating on the copper wire?

Maybe?  if it's a two part paint, does it even have "thinner" in the 
conventional sense (like lacquer or oil-based enamel).  Can you get a 
small amount to try as a sample?

Depends also on the wire.  While everyone talks about it as Enamel 
Magnet wire, it's not really enamel, it's some plastic or another.


>
> Does anyone know if the two pack paint it's self is a poor high
> voltage insulator?

It doesn't really matter all that much. The turn to turn voltage on the 
secondary is only a few hundred to maybe 1000V, and almost any film will 
stand off that kind of voltage.


>
> Any ideas on how to test it?
>
>
> So far I have used an old 1000V mega tester in a pot of the liquid to
> measure the resistance between a couple of electrodes. It always
> reads above 200Mohm regardless of the distance between the
> electrodes.
>
>
> Thanks for any help.
>
> David
>
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>

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