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RE: [TCML] Lacquer (sprays)
Hello William (Bill?), et al,
May I ask whether or not you achieved any measurable sort of success with the spray-on polyurethane? Along with that query, I'm sure many would like to know whether it was an aerosol spray-type or a pressurized spray-pump application, such as that used for automotive painting?
In my personal experience, spray-on finishes (of the aerosol type) are of very poor quality, due to their inherent 'stickiness' and their habit of attracting all of the hair, dust and other 'contaminants' to the finish which occupy the area.
The finish which I achieved on my first coil - 2" diameter on (OMG!) grey PVC, schedule-80 pipe, three-hundred-fifty turns, counted - was dismal and did not 'wick in' to the wire in an even tolerable manner.
On the subject of 'wicking in,' if the enamel on your wire isn't susceptible to the involved solvents, perhaps a great method of coating smaller coils is a coat of a thin, well-wicking and slow-drying cyanoacrylate adhesive (super-glue). All thoughts and 'truths' are welcome. Feel free to destroy my dreams of a super-coil, if necessary! ;)
Thanks Chip, Mods and List-Members,
- Christopher Karr
> From: william_b_noble@xxxxxxx
> To: tesla@xxxxxxxxxx
> Subject: Re: [TCML] Lacquer
> Date: Wed, 7 Apr 2010 15:11:23 -0700
>
> the coating is more for beauty and protection than for insulation, at least
> historically that has been the case - I used a polyurethane spray - I
> believe others have used a wide range of substances - make sure that
> whatever you use doesn't dissolve the insulation on the wire - so I'd avoid
> lacquer and other coatings based on a strong solvent just to be safe.
>
> --------------------------------------------------
> From: "Thomas Schmit" <Thomas.Schmit@xxxxxxx>
> Sent: Wednesday, April 07, 2010 12:43 PM
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Subject: [TCML] Lacquer
>
> > What do you folks use for the lacquer on the secondary coil? There are
> > special lacquers available at motor winding shops, etc that are rated at
> > something like 2000 volts per mil. They are a little bit pricey and was
> > hoping for an easier solution - i.e. something from Lowes, Home Depot or
> > other "big box" store.
> >
> > Any advice?
> >
> > Thanks,
> >
> > Tom
> >
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> >
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