RE: secondary coil (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Thu, 4 Oct 2007 22:46:39 -0600 (MDT)
From: Chip Atkinson <chip@xxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: RE: secondary coil (fwd)

My experience with water based finish was that it didn't stick very well
at all.  I think the varnish on the magnet wire was somewhat hydrophobic
and after it dried it just flaked off.  I got the petroleum(?) based
version of the varnish from the same manufacturer and it worked just
great.

Chip

On Thu, 4 Oct 2007, Tesla list wrote:

> 
> ---------- Forwarded message ----------
> Date: Fri, 5 Oct 2007 00:20:24 -0400
> From: Scott Bogard <teslas-intern@xxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: RE: secondary coil (fwd)
> 
> 
> Gary,
>      It should very well be fine to use water based polyurethane, as long
> as it completely dries before the coil is run.  I guess the concern would
> be getting it "completely dry", even microscopic water pockets would
> probably conduct TC high voltages.  Perhaps somebody out there would be
> willing to do a test, after all, if it can be dried well enough, all that
> will be left is non-conductive plastic, just like regular oil base
> polyurethane.  If the test fails, there are still lots of other options
> for us.  I've read about people using their own chemical concoctions, with
> a variety of things such as lacquer and shellac involved.  And there is
> always epoxy as well. Scott Bogard.
> 
> > Date: Thu, 4 Oct 2007 16:47:59 -0600
> > From: tesla@xxxxxxxxxx
> > To: tesla@xxxxxxxxxx
> > Subject: RE: secondary coil (fwd)
> > 
> > 
> > ---------- Forwarded message ----------
> > Date: Thu, 4 Oct 2007 17:42:47 +0000
> > From: "Lau, Gary" <Gary.Lau@xxxxxx>
> > To: Tesla list <tesla@xxxxxxxxxx>
> > Subject: RE: secondary coil (fwd)
> > 
> > I too have always used just oil-based polyurethane to coat my secondaries.  
> > But the last time I went to Home Depot (the big US hardware/home
> > improvement chain) to buy some, the clerk told me that the oil-based
> > variety won't be around much longer, being replaced with the water-based
> > flavor.
> > 
> > Has anyone actually tried coating a coil with water-based polyurethane?  
> > On the surface it sounds undesirable, but you know what happens when you
> > assume.  I don't know - it may be fine and a lot less stinky and toxic.
> > 
> > Regards, Gary Lau
> > MA, USA
> > 
> > > From: Ben Buxton <bb@xxxxxxxxxx>
> > > To: Tesla list <tesla@xxxxxxxxxx>, mattcook89@xxxxxxxxxxx
> > > Subject: Re: secondary coil (fwd)
> > >
> > >
> > > Pretty much any oil based clear polyeurethane will do the trick, any
> > > hardware store will have it.
> > >
> > > Whatever you do, don't use a water based coating. Check the tin, the one
> > > you want will mention using turps to thin/clean.
> > 
> > 
> > 
> 
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