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Re: Varnishing my secondary.
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- Subject: Re: Varnishing my secondary.
- From: "Tesla list" <tesla@xxxxxxxxxx>
- Date: Tue, 13 Sep 2005 22:29:30 -0600
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Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>
Certainly you can. We all have our "favorite" winding varnishes (I
prefer Marine Spar Varnish). When I varnish a coil, I set the coil up
horizontally and throw on a slow speed motor to keep the coil
turning. I then simply use a stain brush with the varnish (letting it
dry between coats). Once I have 2 or 3 coats on, I lightly sand the
coil form and recoat. If you sand too early, you'll likely sand
through the wire insulation which causes shiny copper areas along the
form. That's why a wait a few coats before I start the sanding and
recoating processes. Once it's smooth to your liking, you can call it done.
Fabricating a motor to run turn the coil form doesn't have to be high
tech or elaborate. If you try to brush on varnish without the form
turning, you will likely cause runs in the varnish. Even spraying on
varnish might be easier if you don't have the means to hook up a coil
turning rig. The only problem with that is the number of cans
required to get a decent coat.
If you need a slow turning DC motor, I have some for sell (contact me
off list). At 24 VDC, it will take about 6 seconds to turn 1 complete
revolution. I've ran these at even slower revolutions down to 5 VDC.
Tesla list wrote:
Original poster: "Nick D." <ngdbud@xxxxxxxxx>
This weekend I managed to finish winding the secondary of my smal
Tesla coil (just over 600 turns) and now i need to varnish it. I am
14 and don't have a budget allowing for enough varnish to just dip a
coil in. I am wondering if I could buy a small bottle of varnish and
paint it on.