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Toroid Support



Original poster: "Ted Rosenberg by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Ted.Rosenberg-at-radioshack-dot-com>

Hello all:
I am refining my 900W coil. Included in the process is using a larger
toroid. So far I started with a 4x16 then went to a 6x21. Now it'll be 8x24.
Breakout to free air should be quite good based on tests and the math.

Managing to coax a heavy duty piece of 8-inch flexduct into a circle is not
fun but it is finally done. I have the aluminum cuts on my fingers to prove
it. See...coiling IS dangerous.  :))

In the past I typically used pie plates top and bottom with a central hole
for secondary mounting, JB Welded into the "hub" for support.
I can't do that now. The center is too tight for a pie plate. And the
8-inches won't allow a top and bottom pie plate to meet.
So, I thought of a 2-inch wide strip of aluminum across the ID with the ends
of the strip bent 90 deg.
But then I wondered why does it need to be across the inner diameter? Why
can't the strip be simply laid across one side of the "donut" and epoxied
there? For example, if the toroid were a tire, the strip would go across the
lettering on the tires wall, not where the center hub cap is.

Is this not recommended?

I would, naturally, file down all the edges of the strip so there are no
built-in breakout points.

Comments would be appreciated.

Safety First

Ted