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Re: oil for caps
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To: "'Tesla List'" <tesla@pupman.com>
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Subject: Re: oil for caps
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From: Tesla List <tesla@stic.net>
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Date: Tue, 23 Dec 1997 22:26:54 -0600
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Approved: tesla@stic.net
From: Bill Lemieux[SMTP:gomez@netherworld.com]
Sent: Tuesday, December 23, 1997 12:40 PM
To: Tesla List
Subject: Re: oil for caps
Ray wrote:
> I'm in the process of making my first rolled cap.
> Easy question. What kind of oil can be used besides tansformer oil?
> Oil substitutes?
Purified mineral oil is dandy, _if_ you can get it cheap enough- try a
chemical supply house and get USP grade. Like any organic oil, it can
be slightly hygroscopic (despite what intuition might tell you) so it's
a good idea to "boil it out" by heating it to about 300 degrees F for an
hour or so. Be careful not to over heat it- monitor the temp with a
good thermometer, otherwise you'll break down the oil and lower its
dielectric strength.
-Gomez
--
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. personal email: gomez@netherworld.com .
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