Re: Toroid Design Features

To: "'Tesla List'" <tesla-at-poodle.pupman-dot-com>
Subject: Re: Toroid Design Features
From: Tesla List <tesla-at-stic-dot-net>
Date: Sun, 9 Nov 1997 23:15:14 -0600
Approved: tesla-at-stic-dot-net

From: 	Chuck Curran[SMTP:ccurran-at-execpc-dot-com]
Sent: 	Sunday, November 09, 1997 7:31 PM
To: 	Tesla List
Subject: 	Re: Toroid Design Features

Hello Malcolm:

I too have made a number of toroids for my existing coils, but I always wish
for one of those big beautiful spun aluminum ones, totally lacking in any
sharp projections to cause a premature breakout!  I've been using the
flexible aluminum
 airduct in my efforts with good success, but after covering it with foil
tape it is still always filled with "Bumps".  Tomorrow I will send a print
to a local shop, just to get a ball park price.  I will be sitting down when
I get it, but I'll remain optomistic.  Thanks for the reply.

Chuck

>
>From: Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
>Sent: Sunday, November 09, 1997 3:52 PM
>To: Tesla List
>Subject: Re: Toroid Design Features
>
>Hi Chuck,
>             A year or two back I talked with a couple of local
>spinners about making toroids. t seems the big cost is in making up
>the formers around which the metal is spun. They shape them out of
>wood before doing the actual spinning. The prices convinced me that
>there had to be a better way. I now just glue foam blocks together,
>shape them with a serated knife, smooth them with sandpaper, then
>apply Al foil with contact adhesive finally smoothing the crinkles
>down by rolling the article around on a hard surface. I don't bother
>about cutting out the inside which also helps with mounting them.
>
>Malcolm