Re: inflatable torroid

I was thinking of large inner-tubes as a possibility. You could spray
conductive paint onto the surface of the tube and if this didn't crack when
it dried it should work OK. Some people I think have had success with foam
toroids coated with graphite or similar.. so this should be possible.
However inner-tubes are now rare of course - perhaps kid's inflatable rings
might be an alternative, or a cheap inner from a fishing float-tube. If
paint doesn't work, I would think that you could glue on coarse
aluminium/copper powder or particles. 

Alex Crow

From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com
Subject: inflatable torroid
Date: 24 July 1999 01:10

Original Poster: Terry Fritz <twftesla-at-uswest-dot-net>

Hi All,

	I was wondering about a torroid made from metalized mylar or some other
inflatable metal coated plastic.  The home center store as heating duct
that looks like it is some thin plastic coated with aluminum and supported
by a spiral spring wire to give the tube shape.

	I was wondering if the thin metal over plastic coating would just burn
away or if such tubing could be of use.  The pipe looks like it would be
stronger than typical aluminum duct when it comes to getting banged around.

	Also one should be able to make or find the materials to make an
inflatable torroid out of metal coated plastic like those party balloons
and some food products come in.  I wonder if it would have bad RF

	I have never tried any of this but though I would see if anyone has only
thoughts on this.  The big aluminum duct torroids can get smashed easily
and they sure take up a lot of room (especially in the car).  An inflatable
version would sure be neat if it would work.