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Re: how to spin metal
From: D.C. Cox[SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent: Monday, December 01, 1997 3:28 PM
To: Tesla List
Subject: Re: how to spin metal
to: Alfred
Agree with most of your comments except the part about welding. All
commercial toroids includes those from Leibovich, American, and others all
use the most to make 1/2 toroid and then weld the halves together. Perhaps
you know something that Leibovich doesn't -- after all they have only been
in business since 1930. They produced all the spinnings for G.E.'s big
Pittsfield, MA, lab and also made all the spinnings for the big GE
lightning generator displayed at the 1939 World's Fair. You can roll the
edges and join the units but it's a slow process -- that's why us and
almost all other commercial spinners I know use the two step process. The
bottom line is that learning any new process takes time -- and until you
get over the 40 year mark most young people don't really appreciate how
important time is. If he has the time and doesn't easily get discourgaged
after spendings countless hours of failure then by all means he should make
his own spinnings. My example with the tire isn't as far fetched as you
might imagine until you have tried to make your own spinnings.
Been there -- done that.
DR.RESONANCE-at-next-wave-dot-net
----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: 'Tesla List' <tesla-at-poodle.pupman-dot-com>
> Subject: Re: how to spin metal
> Date: Saturday, November 29, 1997 7:41 PM
>
>
> From: Alfred A. Skrocki[SMTP:alfred.skrocki-at-cybernetworking-dot-com]
> Sent: Saturday, November 29, 1997 5:17 AM
> To: Tesla List
> Subject: Re: how to spin metal
>
> On Saturday, November 29, 1997 7:50 PM D.C. Cox
> [SMTP:DR.RESONANCE-at-next-wave-dot-net] wrote;
>
> > Unless you are a true glutton for self punishment --- don't try your
own
> > spinning. It makes about as much sense as trying to build your own
tires
> > for your car.
>
> Not hardly! It is one hell of a lot more difficult to make a tire than to
> spin a toroid or a two piece sphere!
>
> > Experience speaks here -- we picked up a spinning machine and spent
nearly
> > 7 months perfecting the technique --- and it's far from perfect at this
time.
>
> Did anyone have any formal training in metal spinning? I was spinning two
> piece spheres when I was in my early teens, but I was instructed by an
old
> timer that did it all his life.
>
> > After spinning there is the the precision welding required and the
final sanding.
>
> Now I know you guys didn't know what you were doing! There is NO reason
to
> weld a toroid if properly spun. The seam is rolled into itself and is
> barely visable. If you needed to sand the finished toroid you DIDN'T use
> enough lubrication while spinning. For Aluminum or copper you should use
a
> lot of tallow or soap to lubricate your tools and then you get an almost
> mirror finish just from the spinning, actually it looks like a wire
brushed
> finish.
>
> > It is very very difficult and is probably hands down the hardest thing
to
> > try to do if you are a self coil builder.
>
> There I would probably agree with the possible exception of someone
> machining a rotory spark gap then we have a close second. If anyone
really
> want's to spin their own spheres or toroids I recomend they go to a local
> shop and work there part time untill they gain enough experience to do a
> proficient job. I have read just about every bok on the subject written
in
> the past 100 years and NONE of the books give adaquite instructions to do
> your own spinning, proficiently.
>
> Sincerely
>
> \\\|///
> \\ ~ ~ //
> ( -at- -at- )
> -----o00o-(_)-o00o-----
> Alfred A. Skrocki
> Alfred.Skrocki-at-CyberNetworking-dot-com
> .ooo0 0ooo.
> -----( )---( )-----
> \ ( ) /
> \_) (_/
>
>
>