Re: drying coil forms

To: tesla-at-pupman-dot-com
Subject: Re: drying coil forms
From: "Dr. Resonance" <Dr.Resonance-at-next-wave-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Wed, 08 Dec 1999 06:11:54 -0700
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Plexiglass (acrylic) is a bad choice for a secondary coilform.  It works
only with a very small coil.  Problem is HV tracking especially at RF
frequencies.  It tends to "track" across the surface due to molecular
adhesion of water molecules from the air.   It's OK if sealed, but still a
rather bad choice for RF high potentials.  Use phenolic, especially G-10
glass laminate or canvass/linen based phenolic.

Happy Holidays,

Dr. Resonance


-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Monday, December 06, 1999 8:15 PM
Subject: drying coil forms


>Original Poster: Justin Gould <justing.mrl-at-dubbo.nsw.gov.au>
>
>
>Does anyone have any experience with secondary forms made from other
materials?
>For example, would a perspex (plexiglass for those in the US) be a feasible
>solution?
>
>Justin
>
>