Re: winding the secondary

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Gregory Hunter by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ghunter31014-at-yahoo-dot-com>

Hi Jeff,

I've wound more than a couple of secondaries on PVC
pipe, and I've come to believe that it's a waste of
time and money to expend lots of effort preparing a
PVC pipe coil form. I "prepare" mine by running some
hot water in the tub and scrubbing the PVC inside &
out with a green scrunge pad and some liquid dish
soap. I remove every last trace of printing, dirt,
oil, etc., dry it off, and let it air dry over night.
I put two or three coats of sealer on the windings to
lock the turns in place and to make it easier to keep
clean. I've tried clear (brush-on, oil-based) gloss
urethane, clear gloss spray acrylic, and clear gloss
spray enamel. I can't tell any difference between
these products--they all work fine. It is not
neccesary to sand out every little scratch & ding--the
wire is going to cover those up anyway. I've liberated
PVC pipe scraps from trash bins at job sites, so I
know about scratched up PVC. It's not a problem.

Best Regards,

Greg
http://hot-streamer-dot-com/greg
<ghunter31014-at-yahoo-dot-com>

--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "Janet Johnson by way of Terry
> Fritz <twftesla-at-qwest-dot-net>"
> <jpjmassage-at-earthlink-dot-net>
> 
> Hi list,
> I am getting ready to wind my secondary and I have
> been reading different
> approaches.  Brent Turner's book says if you use a
> plastic (PVC) pipe, just
> sand it and clean it, wind it and seal it with
> "several light coats of a spray
> acrylic or lacquer."  So he doesn't say it's
> necessary to seal it before
> winding it.  Richard Quick on the other hand, says
> to bake it in an oven
> overnight after wet sanding it and then coat it with
> polyurethane for several
> hours before winding it.  My questions: if you just
> dry sand the pvc do you
> need to worry about drying it?  How smooth does it
> need to be (I haven't gotten
> all the scratches and nicks out of it after sanding
> it quite a lot)?  Do you
> coat it again after winding?
> Thanks for your time...
> Jeff Johnson
> 
> 
> 


__________________________________________________
Do You Yahoo!?
Get email alerts & NEW webcam video instant messaging with Yahoo! Messenger
http://im.yahoo-dot-com