Re: New coil

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

Original poster: Mddeming-at-aol-dot-com 

In a message dated 1/7/04 1:37:11 AM Eastern Standard Time, 
tesla-at-pupman-dot-com writes:
Other popular insulating materials in "pre plastic" days: sulfur, ebonite
(whatever that is...I'm sure one of the historical mavens on the list will
tell us what it is)

Ebonite aka vulcanite aka hard rubber -- A hard, black substance made by 
heating natural rubber with large quantities of sulfur. It was used for 
making combs, buttons, and electrical insulation. I still have some 
bushings and insulated equipment feet made from this stuff.

Matt D.