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Re: Spun toroid sources
---------- Forwarded message ----------
Date: Tue, 7 Oct 1997 16:06:08 -0500
From: Geoff Schecht <geoffs-at-onr-dot-com>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: Spun toroid sources
----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Spun toroid sources
> Date: Monday, October 06, 1997 6:54 PM
>
>
>
> ---------- Forwarded message ----------
> Date: Sun, 5 Oct 1997 23:05:23 -0700
> From: Jim Lux <jimlux-at-earthlink-dot-net>
> To: Tesla List <tesla-at-pupman-dot-com>
> Subject: Spun toroid sources
>
> A possible source is Ace Metal Spinning in Los Angeles, they have a
variety
> of forms. I seem to recall that a 1 meter sphere would set you back in
the
> area of $400-500. As you get bigger, not only is there a problem of
> actually manipulating the huge sheet of metal being spun, but just
getting
> it in the first place. Aluminum comes in 4 or 5 foot wide sheets.
>
> For the truly adventurous, Lindsay Publications has a book on metal
> spinning for a few dollars. I can't find my catalog, but call them up and
> get the metalworking books catalog. It should be in there.
>
Anyone with a wood or metal lathe and a torch can try their hand at metal
spinning. I made a bowl once and I've seen others do things a lot more
exotic. Depending on the material being spun, incremental annealing of the
work may be required and that's why you need to have a blowtorch available.
You're basically limited in the size of what you can spin by the throw of
your lathe and the strength of your form. Unless you have an artillery
barrel lathe at home, it'll be hard to make something like a 1 meter dia
hemisphere!
Has anyone had a muffler shop bend them up the outside ring of a torus? I
was thinking that they could probably do a good job on smaller toroids.
Geoff