Re: Capacitor design and Toroids

>Hi All
>I have started building a REAL coil. 8"dia 26" long secondary and would
>like any feedback to keep the project on track.
>Has any one used Kapton for the dielectric of a capacitor?
>This stuff seems incredible with specs like..
>dielectric strength of 7000V/mil
>dielectric constant of 3.5
>and dissipation factor of 0.003 at 1KHz?

I think most of us find the price as incredible as it's properties.
But, if you know of a inexpensive source, I'd love to know it. I use it at
work and a 1/4" by 18yard roll cost us about $20.