Re: inflatable torroid

I did once see a coil where this was done successfully.  For the
torroid it had a truck innertube covered with aluminum foil.

Any painted or metalized surface would just blow off.  Copper
or Aluminum foil would be ok.  Of course you have to smooth
it down reasonably well.

And every time you set up you have to re-inflate and re-foil the

>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
>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.
>	Terry