Re: Toroid fabrication?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-uswest-dot-net>" <evp-at-pacbell-dot-net>

Tesla list wrote:
> 
> Original poster: "David Knaack by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <dknaack-at-rdtech-dot-com>
> 
> I'm attempting to come up with ideas for DIY fabrication of
> a toroid for my current small coil (4x11 inch primary).  I've
> noticed that craft stores carry foam toroids (presumably as
> a base for a wreath of some sort) in sizes up to about 10
> inches in diameter.  The outer-inner radius is a bit small,
> on the order of 2-2.5 inches, but it doesn't look too bad.
> 
> Has anyone tried using one of these covered with aluminum
> tape or foil, and can make a recommendation?

	I did once, and after the experience would strongly recommend the use
of flex aluminum ducting instead!

Ed