Re: Spinning Toroids

To: tesla-at-pupman-dot-com
Subject: Re: Spinning Toroids
From: Ed Phillips <evp-at-pacbell-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Wed, 09 Feb 2000 18:47:20 -0700
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Tesla List wrote:
> 
> Original Poster: "Antonio Carlos M. de Queiroz" <acmq-at-compuland-dot-com.br>
> 
> Tesla List wrote:
> >
> > Original Poster: "Andy Cleary" <gemware2-at-dreamscape-dot-com>
> >
> >         Has anyone on the list tried spinning their own toroids?  I have
> seen them
> > for sale, were they home-made or commercially made?  The reason why I
ask is
> > this- I received a new Lindsay Publications catalog today in the mail, and
> > in it are three inexpensive books, telling how to spin your own metal
> > objects (vases, bowls, and it even mentions terminals for HV use!).  The
> > books are very inexpensive, ranging from 4.95-9.95.  According to the
blurb,
> > all that is needed is sheetmetal, a lathe, and a few simple tools.  It
> > sounds simple, and I was curious if anyone has tried it?
> 
> John Freau makes nice toroids by spinning:
> http://members.aol-dot-com/FutureT/index.html
> I make balls for electrostatic devices by spinning:
> http://www.coe.ufrj.br/~acmq/spinning
> 
> The technique is essentially simple, but not very easy to master.
> If you want to try, start with small pieces, and be prepared to
> fill some wastebaskets with trashed tries before you learn the
> tricks...
> 
> Antonio Carlos M. de Queiroz

	All true, but it's going to take a huge spinning lathe to handle big
(>12") toroids.  Aluminum dryer duct isn't as elegant, but sure a lot
simpler and less work.

Ed

Ed