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Re: Improved wire screen torroid?
X-Envelope-From: tony-at-lekas-dot-org Wed Aug 26 16:35:33 1998
Unless your screen is very stretchy you are going to end up with a
crumpled, folded
mess on the inside if you expect it not to fold. You might be able to
control the
folding and keep it neat, although it won't be easy.
Tony
Tesla List wrote:
> All this talk of toroid construction using metal screening has got me
> to thinking of a possibly reasonable method of construction. My idea
> is pretty long so here it goes. First make all the thick styrofoam
> reenforcement disks like has already been suggested. Now take a
> flexible strip of (metal, plastic or, ?) equal in length to the inside
> radius of the desired toroid. Screw this metal strap to the long edge
> of a rectangular piece of screening and then glue or screw the disks
> standing up with all their planes parallel to each other but evenly
> spaced along the metal strip. Now wrap the metal screen around the
> disks being sure to leave some slack. Now screw the free edge of the
> screening to the opposite edge forming a simple cylinder. It may now
> be possible to form the whole assembly into a ring with the inner
> metal strap preventing the undesired but very likely tendency of the
> screen to fold in on itself. Now assuming that all this process works
> and assuming that you were flush enough to spring for good copper
> screening you could then wrap the seam where the cylinder ends meet
> with a piece of copper tape. Solder the tape where it overlaps the
> screen to make a smooth joint . Side Note:( It if you have enough
> copper tape and solder you could even wrap the whole toroid with it
> and solder the whole mess into a perfect toroid) . Now that you have
> this fancy ring make a couple of large disks using of thin plywood
> apply some contact cement and add a layer of heavy duty aluminum foil
> to one side of each disk. You could also use copper clad PC board to
> make the disks. Now sandwich the pieces togather with a long bolt. If
> you used PC board and copper screening you could now solder the top
> and bottom into place. Wa la instant torus. Well maybe? Let me know
> what you all think.
>
> Also I would like to hear much more about this Fort Worth Teslathon
> that I missed. Is it an annual event? Who all was there and why
> wasn't I invited dammit : )
>
> adder_black_the-at-yahoo-dot-com
> Dallas Texas
>
>
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