Re: [TCML] large secondary tubes ...

["Tim Meehan" <btmeehan@xxxxxxxxx>]

Have you guys ever considered fiberglass or carbon fiber (I think carbon
fiber is probably too conductive for anything to even consider) - I have a
friend who is into large model rockets and he has some experience with
making fiberglass tubes, but I think that even fiberglass might have
problems.  I was going to find out how good it was for RF before I invested
any time/money into it.

I would imagine that polypropylene would be pretty slippery - did you treat
it with some sort of glue to make it sticky before you wound wire on it?  I
don't remember much sticking to polypropylene ... I think they use it for
storing chemicals for that very reason, but it is tough as nails and
probably holds good weight for its size.

On Nov 17, 2007 2:12 PM, Peter Terren <pterren@xxxxxxxxxxxx> wrote:

> I got my 18 x 52 wound former made at a plastics place out of
> polypropylene
> 3mm I think with 6mm flanges and ?15mm topload/motor supports. Cost $250,
> weighs aboput 9kg.
> Lighter than PVC and has various trimmings. Only problem was that
> polypropylene is a bit slippery when winding.
> http://tesladownunder.com/Tesla_coil_18inch.htm#Secondary%20former
> Peter
>
> ----- Original Message -----
> From: "Tim Meehan" <btmeehan@xxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Sent: Sunday, November 18, 2007 4:54 AM
> Subject: [TCML] large secondary tubes ...
>
>
> > For all of you guys that make the big secondary tubes (I suppose big
> would
> > mean bigger than 1 foot in diameter?)  Do you use PVC, or do you have
> some
> > clever scheme for making them out of other materials, like fiberglass or
> > something like that?
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