Re: [TCML] Sonotube Preparation

[Steve Ward <steve.ward@xxxxxxxxx>]

Well, i can say that i never removed it on any of my sonotube forms.  Is
there any reason TO remove the inner layer?  It usually seems to be wax or
plastic film coated, i took this to be a *good thing*.

Steve

On Fri, Jul 17, 2009 at 1:05 AM, Jim Mora <wavetuner@xxxxxxxxx> wrote:

> Hi Steve,
>
> I plan to wind a 22 or 24" sonotube in the future. I remember reading that
> the interior wrap is also removed. If you are confident with not doing that
> it sure would save some work!
>
> Jim Mora
>
> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
> Of Steve Ward
> Sent: Monday, July 13, 2009 3:15 PM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Sonotube Preparation
>
> Tyler,
>
> Having wound many coils on sono-tube, here is my method.
>
> 1) make sure the tube has been in a fairly dry place for awhile, if its
> soggy, throw it out and buy a new one ;-).
>
> 2) remove the outer layer of waxy paper with all the black ink printed on
> it.  Usually this will peel off carefully, if you are not so lucky you can
> use an orbital sander to rip it all off.
>
> 3) give the rough cardboard form a nice heavy coat of polyurethane varnish,
> the cardboard will soak it up real nice.
>
> 4) after the varnish dries, give it a little wipe down to remove any large
> pieces of dust or anything, and wind the coil.
>
> 5) i give my coils 1 coat of varnish right after its done.  I let this dry
> overnight, and the next day apply a good coat of pour-on epoxy (or more
> coats of varnish if you like).
>
> My sonotube coils have no problem hurling 10-12 foot sparks (4' tube).
>  They
> are nice and light weight, but they can be fragile.  I beef mine up with
> some internal baffles cut out of 3/8" plywood.  They are just a snug
> friction fit inside the tube, i use 2 baffles total (plus the 2 end caps,
> also plywood).
>
> Steve Ward
>
> On Mon, Jul 13, 2009 at 11:06 AM, Tyler Pauly <rpggod714@xxxxxxxxx> wrote:
>
> >
> > Hello all,
> >
> > First, sorry for the previous message.  I must not know how to use yahoo
> > mail....
> >
> > Anyways, I am getting ready to coat a 12" sonotube with some helmsman
> spar
> > varnish, but I'd like to get a general idea of how everyone else prepares
> > their tube.
> >
> > I looked through the archives, but no one seemed to mention that theirs
> had
> > a wax coating on the inside.
> >
> > Regardless, I'm not sure what to do with it.  I don't believe the varnish
> > will stick to it, but I fear pulling out the waxed layer will weaken the
> > integrity of the form.
> >
> > Also, it has red and blue lettering on the outside.  Do I really need to
> > sand off the outer layer of the sonotube because of this?  Maybe I'm
> > paranoid, but it seems like this could weaken it as well.
> >
> > I appreciate any suggestions or recommendations!
> >
> > Thanks,
> > Tyler
> >
> >
> >
> >
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