Re: [TCML] sealing a cardboard form

[DC Cox <resonance@xxxxxxxxxxxx>]

A Tesla coil secondary coilform is subjected to very high potential
stresses.  Why not just use a product especially developed to seal high
voltage transformer windings?
Dolph's AC-43 is one such liquid especially designed with high dielectric
resistance, and anti-tracking properties.

You certainly can take a chance with other products, but if they don't do
the job then you have to completely replaced the coilform and rewind the
coil.

It really comes down to one thing --- just how important is your time and
how many times do you want to do it over again?

Do it right the first time and completely eliminate all the variables.

Various material might just work, but why take a risk on something that
isn't tested to seal and insulate high voltage transformer windings?

Dr. Resonance




On Fri, Jul 24, 2009 at 11:20 AM, PAUL THOMPSON <mrapol@xxxxxxxxxxx> wrote:

> Hello,
>
> I was wondering about using a commercial sealer instead of polyurethane or
> shellac to stabilize a cardboard tube form. Specifically Thompson's Water
> Seal. Any drawbacks to this? I would still use shellac to coat the secondary
> winding, but anything wrong with using TWS on the bare cardboard?
>
> Regards,
>
> Paul
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