Jumbo aluminum tape toroid built and tested.

J. Aaron Holmes, Wed Sept 05 2007, 06:15PM

Coworker and fellow TC'er Nick Harlson test-fired his coil this last weekend using a new toroid he just finished building. It was made paper mache-style using news paper and polyester resin over an inner tube. Once the polyester resin hardened into a nice plastic donut, he wrapped this in aluminum tape. Seems to work well, but no long-haul test results are available yet wink I thought I'd share his production photos for those interested in fab'ing their own big toroids.

Here's the toroid being made:
http://picasaweb.google.com/calumet45/Toroid2007

Here's the toroid in action:
http://picasaweb.google.com/calumet45/TeslaCoilSep12007/photo#5106160704510620546

Cheers,
Aaron, N7OE

Re: Jumbo aluminum tape toroid built and tested.
Zum Beispiel, Wed Sept 05 2007, 06:44PM

That is a pretty cool toroid (and coil too). That aluminium tape approach seems to work well for bigger toroids. All the small ones I have tried to make didn't come out so well, though.

I like the cat in this picture. Kitty is like :"Omg, toroid" cheesey
Re: Jumbo aluminum tape toroid built and tested.
Capper, Wed Sept 05 2007, 06:55PM

I've had both good luck and bad times with aluminum tape. The sticky side sometimes makes a real GOOD insulator (when you don't want it to).

Scott
Re: Jumbo aluminum tape toroid built and tested.
Bauerb2, Wed Sept 05 2007, 07:56PM

Yeah i've always had problems with the sticky side of the tape. always messed up the continuity ....


Inner tube toroid, very nice man. Looks great!

-Andrew
Re: Jumbo aluminum tape toroid built and tested.
Wirenut, Thu Sept 06 2007, 01:30AM

Very nicely done. I use the same brand of al. tape - A little acetone on a rag will remove all of the red writing and make the toroid look shiny.