Re: Foam-core Toroids

["William R. Langston" <blangsto-at-iwvisp-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Boy, would I be interested in those larger size, foam-core toroids. This would
be a great boon to experimentation on a limited budget. I too have looked
in all
the "usual" places, no luck so far.

Bill Langston

Tesla list wrote:

> Original poster: "Lau, Gary" <Gary.Lau-at-compaq-dot-com>
>
> While there is nothing that looks as nice as a professionally spun toroid,
> consider the agony you would feel if and when it fell off the top of your
> coil and became permanently dented.  I think most of us that have made
> toroids out of corrugated aluminum duct have eventually had them dented from
> these sorts of mishaps.
>
> I recently tried an experiment to improve upon the durability of home-made
> toroids.  I attempted to fill my 6" x 22" Al duct toroid with a polyurethane
> foam.

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