Re: secondary coil insulation

Tesla List wrote:
> >From major-at-vicksburg-dot-comMon Aug  5 21:48:13 1996
> Date: Mon, 05 Aug 1996 21:06:34 -0700
> From: Roderick Maxwell <major-at-vicksburg-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: secondary coil insulation
> Does anyone on the Tesla list know what would be a good high voltage
> coating for the secondary coil? I,m looking for something that will
> have low dielectric losses. I was thinking about useing epoxy resin as
> a coating. Am I barking up the wrong tree?
> [ I'm replying here because of convenience and because I can, not because I
>  feel that my opinion is better, more important, etc.
>  I suggest a product that you can find in the paint and varnish section
>  of your hardware store.  It's Behr Super Gloss Build 50, which is a two
>  part water clear coating.  It smells like epoxy as I recall, and can put
>  on a 50 mil coating in one shot (hence the name).  If you used a
>  mechanical apparatus to turn your secondary, put the coil back on it,
>  start it turning, and put the mixed up stuff on it, and let it rotate for
>  about 4 hours while it cures.
>  For performance reasons a coating is not necessary according to several
>  people on this list.  Others feel otherwise.  My personal opinion is that
>  I need it because I'm more likely to drop, scuff, nick, or otherwise
>  injure the coil, so a good 50 mil armor coat is necessary. -- Chip ]

   Thank you for the information. I have not seen that particular coating, but I've 
found a two part epoxy that is sold by United States Plastics Corp. that is probably 
similar. My primary concern was dielectric losses in the coating. I'm trying to keep 
them as low as possible.