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Coil Form Sealing?
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To: "'Tesla List'" <tesla@pupman.com>
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Subject: Coil Form Sealing?
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From: Tesla List <tesla@stic.net>
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Date: Thu, 16 Apr 1998 08:13:45 -0500
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Approved: tesla@stic.net
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From: Barton B. Anderson [SMTP:mopar@mn.uswest.net]
Sent: Wednesday, April 15, 1998 11:15 PM
To: Tesla List
Subject: Re: Coil Form Sealing?
Brian,
I personally like the spar varnish. In my opinion, it goes on thicker than the
polyurathane. When I used polyurathane, it took three times the number of coats
to acheive the same thickness that I've acheived with spar varnish. Also with
the polyurathane, I noticed some cracking. The spar varnish is flexible and
resist cracking and peeling. Spar varnish on a wooden floor is not something you
would want because it's a bit tacky, but on a TC, it does all right in my book.
|_Bart_|
Tesla List wrote:
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> From: Basura, Brian [SMTP:brian.basura@unistudios.com]
> Sent: Wednesday, April 15, 1998 11:38 AM
> To: 'Tesla List'
> Subject: Coil Form Sealing?
>
> Hello Fellow Coilers,
>
> I now have my 6" PVC coil-form. I've sanded it inside and out and it's now
> drying under a heat lamp. My question is what to use to seal it with
> (before and after winding). I have oil based polyurethane and spar varnish.
> I'm leaning towards the polyurethane since a test shows it is thicker and
> adheres better to the 200 oC magnet wire. Although the spar varnish has
> proven to be very durable on previous projects. What are your suggestions?
>
> Almost forgot to say that I will keep the secondary turning on the winding
> jig while the sealer dries.
>
> Thanks,
> Brian B.