Re: Making a Toroid

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

Original poster: "Bert Hickman by way of Terry Fritz <twftesla-at-qwest-dot-net>" <bert.hickman-at-aquila-dot-net>

Ralph,

I coiled a short length of sheet metal (I used galvanized sheet steel, but
aluminum flashing should also work) to form a cylinder about 2" in height
and a little less than 8" in diameter for my 32 x 8" toroid. By carefully
slipping this inside one open end of the flex duct and letting the cylinder
spring outwards a bit, you'll get a snug fit inside the ducting. Use a bit
of aluminum tape to secure the cylinder inside the flex duct to a depth of
about 1" and then slide the other end of the flex duct over the other end
of the sheet metal cylinder. A final layer of aluminum tape then covers the
seam, making a solid, smooth joint.

-- Bert --
-- 
Bert Hickman
Stoneridge Engineering
Email:    bert.hickman-at-aquila-dot-net
Web Site: http://www.teslamania-dot-com

Tesla list wrote:
> 
> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<Parpp807-at-aol-dot-com>
> 
> In a message dated 8/31/01 2:25:12 PM Central Daylight Time, tesla-at-pupman-dot-com
> writes:
> 
> <<  aluminum foil tape.
>   >>
> Ed,
> I posted just tonight to describe how I plan on using the material I have. I
> am thinkin'
> of joining the ends with Al tape if the simple duct tape doesn't work. Do you
> use the
> tape with the conductive adhesive? Is it a must? The stuff is sorta pricey.
> 
> Ralph Zekelman