Re: [TCML] Fluff in the secondary

[Bert Hickman <bert.hickman@xxxxxxxxxx>]

Hi Steve,

Remove longest threads of lint using either a "directional" 
(self-cleaning) lint brush or an adhesive lint roller. Stubborn pieces 
may need to be carefully removed using a pair of pointed tweezers. Once 
you've removed as many of the larger loose fibers as you can, dry out 
the form (and fibers) using a hair dryer and then immediately coat the 
form with either multiple coats of clear polyurethane, a 2-part clear 
epoxy coating, or HV corona dope.

Any of these products will help to seal in any remaining fibers, 
preventing them from standing up in the high surface E-field and from 
absorbing moisture from the air. The coating also smooths out the 
E-field along the entire surface of the secondary, preventing corona 
from ever starting. A thick epoxy coating can even reduce or prevent 
winding damage if you ever get any racing sparks or primary-secondary 
flashovers  -  hits to the secondary tend to spread out in 
Lichtenberg-like surface discharges instead of puncturing/damaging the 
wire insulation below.

Good luck and best regards,

Bert
--
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We specialize in UNIQUE items! Coins shrunk by huge
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Stephen J. Hobley wrote:
> We did our first 60ma tests of the coil last night, pictures to
> follow, but one immediate problem was tiny white flashes of light on
> the secondary. They were fixed in space (not racing) and when we
> looked closely at the coil we noticed that there are tiny fibres of
> lint trapped in the coil windings.
>
> We did not seal the coil - next time we will - how can we remove the
> lint without damaging the windings, it seems in there pretty tight.
>
> Steve
>
>
> ------------------------------------------------------------------------
>
>
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