RE: Torroid idea

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

Original poster: "MakingLightning by way of Terry Fritz <twftesla-at-qwest-dot-net>" <makinglightning-at-home-dot-com>

You could also wrap the tube with saran wrap, then coat over that. Epoxy
does not seem to stick to it. I have made several 4" coils by wrapping a 4"
cardboard tube with saran wrap, then wound my coil on that, then epoxy'ed
it. Then I took the cardboard tube out (I had previously had it cut in two
before I wrapped it), then the saran wrap peeled out. I was left with a coil
with no form, only the epoxy holding it together. I called it my formless
coil. Better than sonotube, pvc, or acrylic because there is nothing but
air, and of course the coating, which you would have on any coil. I tried
making coils with a bunch of coatings and epoxy was the strongest. It is
pretty strong, but I would still not want to drop one on the ground, that is
the downside. But anyways, saran wrap does not seem to stick to coatings for
some reason.

Kevin Conkey


-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Wednesday, December 19, 2001 10:16 AM
To: tesla-at-pupman-dot-com
Subject: Re: Torroid idea

Original poster: "rheidlebaugh by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<rheidlebaugh-at-zialink-dot-com>

If you dont greese the tube the resin will stick to the tube.
  Robert  H

> From: "Tesla list" <tesla-at-pupman-dot-com>
> Date: Tue, 18 Dec 2001 21:59:21 -0700
> To: tesla-at-pupman-dot-com
> Subject: Torroid idea
> Resent-From: tesla-at-pupman-dot-com
> Resent-Date: Tue, 18 Dec 2001 22:13:44 -0700
>
> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <Winchandle-at-aol-dot-com>
>
> I havent done this yetbut...
> get a car tire innertube and inflate it. Get some of that fabric
> "fiberglass" casting tape (that orthopedic surgeons use to cast
fractures),
> and wrap it around the torroid completely enclosing it.  Leave a gap/slit
> in it.  Once the fiberglass has set, deflate the innertube, and cut it out
> through the slit.  Use more tape to cover the slit, and further reinforce
> the coil.  Then cover the whole thing with aluminum "duct tape."  I guess
> once could also use regular fiberglass tape and polyester (boat building)
> resin
> Bill Shepard
>
>
>