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Re: Cutting torroidal cores
Original poster: "Ben McMillen by way of Terry Fritz <teslalist-at-qwest-dot-net>" <spoonman534-at-yahoo-dot-com>
Thanks to all for the posts so far.. ;)
As for the wide gap, these cores are going to be used as
c-core electromagnets in a machine known as a homopolar
generator. Not necessarily tesla coil related, but I
figured that this was the best place to find out how to
make the cut. It's part of an independent project that I'm
working on with a friend (and possibly a senior project ;)
) We hope to be able to use it to power a rail gun.. :-D
Coiling In Pittsburgh
Ben McMillen
--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "Ed Phillips by way of Terry Fritz
> <teslalist-at-qwest-dot-net>" <evp-at-pacbell-dot-net>
>
> Tesla list wrote:
> >
> > Original poster: "Ben McMillen by way of Terry Fritz
> <teslalist-at-qwest-dot-net>" <spoonman534-at-yahoo-dot-com>
> >
> > Hi all,
> > Does anyone have any suggestions on how I might go
> about
> > cutting a 1/2" wide slot in a torridal core? (the kind
> that
> > you find in variacs) I need to cut a slot all the way
> > through to make a "c" core so that a metal disc can
> pass
> > between the poles. The cores are made from soft iron
> strap
> > that's been coiled. They've also got plastic formers
> around
> > the inside and outside. I've heard mention that they
> tend
> > to come apart when cut... Is there any way to prevent
> this?
> > I've got access to a really good machine shop..
> >
> > Thanks for any help!
> >
> > Coiling In Pittsburgh
> > Ben McMillen
>
> I'm answering this late so you've probably gotten lots
> of replies, but
> correction. The core is NOT soft irong strap! It is
> very thin and hard
> silicon steel and very difficult to cut with a saw. I
> suspect a diamond
> abrasive cutoff wheel would work OK. Don't understand
> the very wide
> cut, which seems larger than you need for a very
> effective air gap.
>
> Ed
>
>