RE: coil form idea (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

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Date: Mon, 4 Jun 2007 09:38:07 +0100
From: Derek Woodroffe <tesla@xxxxxxxxxxxxxxxxxxxxxxxx>
To: 'Tesla list' <tesla@xxxxxxxxxx>
Subject: RE: coil form idea (fwd)

Drake,	
	I have made a coil with no former...

	I wound a small coil around a large candle. Varnished it with many
layers of yacht varnish and then cooked it in an oven to remove the candle,
leaving a coil held together with just varnish.

	It did perform as a TC secondary, I'm not sure if it was any better
than a coil wound on a PVC former though.

	I didn't use the coil for long as it was very delicate it only just
supported a top load on its own. 

Maybe if a much thicker layer of two pack epoxy was used instead of the
varnish a stronger coil could be made, but the more epoxy you use the
(assumed) benefits of having no former would be reduced.

	Cheers
		Derek

	http://www.extremeelectronics.co.uk