Re: [TCML] Considering a new coil build...

[Scott Bogard <sdbogard@xxxxxxxxx>]

On 3/25/09, Travis Tabbal <travis@xxxxxxxxxx> wrote:
Try making a toroid out of a big truck tire tube, very smooth, about
12*40 and will never ding.  Don't leave it out in the sun as it will
expand and split your aluminum tape.  you may need to make bands out
of duct tape before you inflate it so it stays a constant diameter
though, and you may choose ot cover the whole thing in paper mache,
though I have found this to be unnecessary.
http://bogard.110mb.com/TCTopload.html

Scott Bogard.
>
> For the toroid, going bigger means fabricating them. I have yet to make a
> decent looking dryer duct toroid. Any tips there? Mine always end up wrinkly
> and ugly. I'd like to build something of a show piece here. It won't be on
> the level of the stuff Dr. Resonance and others on the list pull off, but I
> want it to look nice and be reasonably durable, so that it can take small
> hits while in storage. I might be able to do an open frame design like the
> coil used in Mythbusters. Even that might push my metalworking skills
> though. I'm a decent welder and such, but I'm still far better with woods
> than metal.
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