Re: PVC Pipe

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Karl Lindheimer <karl@xxxxxxxxxxxxxxx>

Gary,

I would have to concur with your statement that sealing the secondary 
windings with poly or lacquer is a very good idea.  The finish provides: 
1.  physical protection of the secondary windings.  2.
Mechanical aid to prevent windings from slipping or uncoiling.  3.
Insulation against racing sparks and arcing to primary.  4.  A nice finish 
to look at.

Dan;

I also nearly agree with your statement that drying and sealing the 
secondary former is usually not necessary.  Right now, in the Northeast, 
the humidity levels are under 20 %.  You won't get much better even in a 
drying oven.  The only time I would recommend oven drying and then sealing 
would be if the PVC tubing were exposed to very humid conditions outdoors 
for a while.  Even then, it probably would not matter with the average coil.

Regards,

Karl

On Mar 11, 2005, at 5:55 PM, Tesla list wrote:

> Original poster: "Lau, Gary" <gary.lau@xxxxxx>
>
> I would have to agree.  But I do still like to apply several coats of
> polyurethane over the wound secondary to keep things from moving about,
> and general aesthetics.
>
> Regards, Gary Lau
> MA, USA
>
> > Original poster: "Daniel McCauley"
> <dhmccauley@xxxxxxxxxxxxxxxxxxxxxxxxxx>
> >
> > I don't think you have to worry about drying and sealing your PVC
> pipe.  To
> > be honest, i think its a waste of time.
> > I've built plenty of coils in the past years without doing this and
> i've
> > never had a problem.
> > I wouldn't waste your time on that.
> >
> > Dan
> >
> >
> >  > All,
> >  > Thanks a lot for all the info on PVC pipe. They weren't kidding
> when they
> >  > said everyone on here is nice and helpful! From what you've told me
> and
> >  > from what I've seen other people using on their very successful
> TC's, I
> >  > think I will just go ahead and dry and seal white schedule 40 PVC
> inside
> >  > and out and use it. It certainly is cheap and easy to find.
> >  > Paul Brodie