I've thought about using a pool noodle wrapped around a disc as a toroid, covered in aluminum tape. There are some hollow pool noodles such that a slit could be cut along the axis to give it a grip around the circumference of the disc. But would a larger diameter of the overall toroid width make up for the fairly small diameter of the pool noodle?
----------------------------------
Brian Hall
> Date: Wed, 1 Apr 2015 20:22:24 -0500
> From: tdg8934@xxxxxxxxx
> To: tesla@xxxxxxxxxx
> Subject: Re: [TCML] Making a larger toroid ideas
>
> Peter,
>
> I ordered the Mori clips from the ebay link you sent. I'll try them out and
> see how they can clip two ends together of the dryer ducting. I don't see
> it yet but I'll try it out. Shipping to my address in Illinois (USA) is
> quite long (but free) - 17 April to 12 May for $20 USD.
>
> Thanks for the good idea!
>
> Tim
>
> On Wed, Apr 1, 2015 at 5:29 PM, Peter Terren <pterren@xxxxxxxxxxxx> wrote:
>
> > Moriclips will clip two adjacent ribs together from the ducting ends into
> > a circle without projecting out to form a breakout point.
> > I use several and can put up and take down the ducting quickly.
> > I am using 18 inch ducting. Far better than conductive tape etc. I have a
> > plastic bucket to support the inner radius and it all sits on a big
> > aluminium disc.
> >
> > Peter Terren
> >
> > -----Original Message----- From: Timothy Gilmore
> > Sent: Thursday, April 02, 2015 4:45 AM
> > To: Tesla Coil Mailing List
> > Subject: Re: [TCML] Making a larger toroid ideas
> >
> >
> > Peter,
> >
> > I see that the Mori clips will clip onto something like paper or a folder.
> > I don't see how they would be used to join together dryer ducting. Can you
> > explain?
> >
> > Tim
> >
> > On Wed, Apr 1, 2015 at 2:52 PM, Peter Terren <pterren@xxxxxxxxxxxx> wrote:
> >
> > Dryer ducting joins can be done with Moriclips or similar. I use these in
> >> my office instead of paperclips.
> >> They slide on and lock. Sometimes I use a couple of small aluminum angles
> >> to help the slide off.
> >> http://www.ebay.com/itm/Carl-Mori-Clips-SMALL-20-Page-
> >> Capacity-MC52-1-Box-of-50-clips-SILVER-/121286431691
> >>
> >> Peter Terren
> >> tesladownunder.com
> >>
> >> -----Original Message----- From: Timothy Gilmore
> >> Sent: Wednesday, April 01, 2015 7:53 PM
> >> To: Tesla Coil Mailing List
> >> Subject: [TCML] Making a larger toroid ideas
> >>
> >> Now that I have my mid sized Tesla coil working with 3 feet averaging and
> >> some over 4 feet using 2 15kv 60mA NSTs... I would like to focus on
> >> building a bigger Toroid top load. Currently I'm using 6" dryer ducting
> >> with foil pizza pans in the middle. As most dryer ducting designs go, it's
> >> not "smooth" and I get a lot of side sparks. I'm thinking if I can build
> >> one with 8" dryer ducting or larger and figure out a way to make it smooth
> >> it should create less but longer thicker sparks.
> >>
> >> What are coilers doing about this problem? I'm not going to spend $400+
> >> for
> >> a machined one that's smaller. I'm limited on tools with a hacksaw and
> >> electric drill for the moment. If dryer ducting is to be used, what are
> >> you
> >> guys using to join the ends together (just tape)?
> >>
> >> Thanks,
> >>
> >> Tim
> >> _______________________________________________
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> >>
> >>
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