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Re: Terry's DRSSTC

Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>

Hi,

Another thing that really helps is not to stretch to ducting out too far. Leave plenty of spring in it still so the ends can simply be brought naturally together without much force. In my case, I bent it into a circle and the ends naturally fit right together without any help. I taped the ends up and "then" clamped the donut lightly in the pans. I little pushing here and there easily got it centered up into a nice circle. Like winding primary coils, try to force things as little as possible. If you try to stretch it out hard to get the maximum length out of it, it will fight you real hard. So just go easy and don't stretch too much or make the duct bend more than it wants too.

Cheers,

        Terry

At 11:02 AM 3/26/2005, you wrote: 
hi,
    i punch a couple of holes in the ducting with a screw driver behind the
first binding wire rib. i then slip those very small cable ties through and
pull tight. then slide the cable tie around until head is below the level of
the rib. then tape carefully with aluminium tape for cosmetic reasons.
cheers
colin heath

----- Original Message -----
From: Tesla list <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Saturday, March 26, 2005 4:18 PM
Subject: Re: Terry's DRSSTC


> Original poster: Ed Phillips <evp@xxxxxxxxxxx>
>
> "In a message dated 3/24/05 7:30:08 PM Pacific Standard Time,
> tesla@xxxxxxxxxx writes:
> Terry,
> Thanks for your prompt response. How do you join the ends of your
> toroid? I
> put two slits down the sides of one end and compressed it just enough to
> slide about one inch of it inside the other end. I then took aluminum
> duct
> tape and sealed this joint as smoothly as I could. Someone else told me
> to
> "sew" the ends together with small gauge copper wire but this looks like
> it
> would be incredibly difficult to line up and keep in line while sewing,
> especially if attempted alone by some sucker who is legally blind! {:-)
> Any
> advice is welcome. Anyone else care to tell how they connect the ends of
> their toroids?
> Paul Brodie
>
> Paul,
>
> I did it exactly like you did.
>
> Ed Sonderman"
>
> I have had good luck with a somewhat different technique, which is
> somewhat simpler than some presented here.  I use masking tape to hold
> the ends together (takes someone to hold them for first taping), first
> on the outside edge, then on the inside, then on the top and then on the
> botton.  That in out up down stuff assumes the thing is flat on a
> table.  I then wrap enough masking tape around the joint to hold it a
> bit more firmly.  Next step is to wrap the entire ring with several
> layers of masking tape, just as one would do with aluminum tape except
> the masking tape is a lot cheaper.  By careful wrapping the masking tape
> will fill in a lot of the valleys between ribs.  Final step is to wrap
> the ring with aluminum tape as per usual.  The initial practice with
> masking tape helps to make this job neat.
>
> At that point the surface of the ring is all metallic and forms the
> real top terminal, even though the masking tape insulates it from the
> duct at the core.  Next step is to cut disks of hard fiber board to such
> a diameter that they are about an inch apart when put on opposite sides
> of the inside of the ring.  Three holes are drilled for screws to hold
> the plates together and a fourth hole is drilled in the middle for
> mounting.  One or both of the plates are then wrapped with foil and the
> whole assembly bolted together.  Easier to do than it sounds in this
> tangled description and works beautifully IF ONE IS VERY VERY CAREFUL.
>
> Ed
>
>
>