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4hv.org :: Forums :: Tesla Coils
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painting the secondary

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audio:deviant
Wed Apr 15 2009, 11:50AM Print
audio:deviant Registered Member #2081 Joined: Wed Apr 15 2009, 11:36AM
Location:
Posts: 78
hello all, in the process building my drsstc II was just wondering about painting the secondary. i was thinking of using matt black standard spray paint, but just had a thought it might effect the coil... any ideas?
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Dalus
Wed Apr 15 2009, 01:22PM
Dalus Registered Member #639 Joined: Wed Apr 11 2007, 09:09PM
Location: The Netherlands, Herkenbosch
Posts: 512
Your thought is correct, most paints contain colourants that conduct electricity. You need a clearcoat on a solvent basis that doesn't dissolve the enamel on your wire.

Polyurethane floor varnish works well. Or almost any thin epoxy clear coat.
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audio:deviant
Wed Apr 15 2009, 03:45PM
audio:deviant Registered Member #2081 Joined: Wed Apr 15 2009, 11:36AM
Location:
Posts: 78
bit of a shame wanted to make some sort of pattern across it. will have a look for some polyurethane. thanks!
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Plasma Lover
Wed Apr 15 2009, 05:11PM
Plasma Lover Registered Member #1911 Joined: Mon Jan 05 2009, 06:30PM
Location: Salem, Oregon, USA
Posts: 165
There is a point at which you can simply stop coating it in polyurethane and put on a colored coat, as lon as it doesn't near the edges of the coil (the top and bottom). This may create some weakness in insulation, but not a great deal, if you do more than one coat of polyurethane after you do the coat that 'feels like glass'. I may be completely wrong here, but it shouldn't be a terrible insulation fault.
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audio:deviant
Wed Apr 15 2009, 07:51PM
audio:deviant Registered Member #2081 Joined: Wed Apr 15 2009, 11:36AM
Location:
Posts: 78
okay do you mean the paint has to stop before the coil? what about some sort of cover over it. the massive one in mythbusters had a cover, (lightning lab) thought it looked pretty cool really like that top load as well.
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Renesis
Wed Apr 15 2009, 08:52PM
Renesis Registered Member #2028 Joined: Mon Mar 16 2009, 08:13PM
Location: Norway
Posts: 319
If you put your secondary inside another plastic pipe and paint that pipe instead then insulation should not be a problem. However i dont know how that will affect cooling and coupling.

Camoulflage pattern would be kinda neat, right? Or that diagonal black/yellow warning pattern.
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audio:deviant
Wed Apr 15 2009, 11:27PM
audio:deviant Registered Member #2081 Joined: Wed Apr 15 2009, 11:36AM
Location:
Posts: 78
yeah not a bad idea, was going to do some sort of stencil. be pretty cool.
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Mike
Thu Apr 16 2009, 12:36AM
Mike Registered Member #58 Joined: Thu Feb 09 2006, 05:40AM
Location: Tri-Cities, Washington, US
Posts: 317
Just my opinion, but I think leaving a clear coat on always impresses everyone when they see how many turns are on each coil. They also ask me " You seriously wound this by hand??? You're crazy!!" I think it is pretty impressive but do whatever you like :)
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Dr. Drone
Thu Apr 16 2009, 12:50AM
Dr. Drone Registered Member #290 Joined: Mon Mar 06 2006, 08:24PM
Location:
Posts: 1673
shades
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teravolt
Thu Apr 16 2009, 01:13AM
teravolt Registered Member #195 Joined: Fri Feb 17 2006, 08:27PM
Location: Berkeley, ca.
Posts: 1111
just use paint that doesn't have flake or carbon. are there any clear types of paint?
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