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Re: polyester resin
> Date: Mon, 3 Feb 1997 22:25:49 -0700
> From: Tesla List <tesla-at-poodle.pupman-dot-com>
> To: Tesla-list-subscribers-at-poodle.pupman-dot-com
> Subject: polyester resin
> Reply-to: tesla-at-pupman-dot-com
> Subscriber: mhammer-at-misslink-dot-net Mon Feb 3 21:47:47 1997
> Date: Mon, 03 Feb 1997 17:11:16 -0600
> From: Mike Hammer <mhammer-at-misslink-dot-net>
> To: tesla-at-pupman-dot-com
> Subject: polyester resin
>
> All,
>
> I've been rebuilding a 12kv/60ma neon and using polyester
> resin to coat and insulate the secondaries.
> It makes a nice hard layer and should insulate well.
>
> Has anyone used polyester resin to coat a secondary?
> I'm sure its probably not as good as epoxy from a RF dissipation
> standpoint but is it any worse than polyurethane varnish?
>
> A local discount house house tons of this stuff cheap
> and if it would work OK on a secondary I would like
> to try it.
>
> Mike Hammer
> mhammer-at-misslink-dot-net
>
Mike,
I used two coats of polyester resin to overcoat the #12 AWG THHN wire
employed on the secondary of my large system, dubbed LTC. It is brittle
and cracks easily, and did not *stick* to the clear plastic sheath
overcoating this type of wire (is this nylon?), but it sure adheres
well to the eight equally spaced 1.5 inch ABS pipes I used to make the open
form. This coil performed very well in the only test yet conducted about two
years ago yielding an 18 foot strike on 10-11 kVa input. It appears that
the use of this resin probably isn't hurting the performance. I am
eager to try some Behr Super Build 50 on a coil sometime, but I think
it would also be brittle. A two part coating that is more flexible
would be nice to find to coat and hold together large open frame
secondaries. Anyone out there have any suggestions?
rwstephens