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Secondary Formers
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From: Mark Finnis [SMTP:mefinnis-at-medicine.adelaide.edu.au]
Sent: Monday, August 24, 1998 4:18 AM
To: Tesla List
Subject: Re: Secondary Formers
At 11:26 PM 23/08/98 -0500, Bert Pool wrote:
>Mark, you have a *very* nice looking coil!
Coming from someone like Bert, I have to confess this brought a smile to my
face ;-)
>And the poly pipe will make a superb
>coil form for your next coil. With poly, I would not be concerned with wall
>thickness at all - except for the weight. BTW, how much does this piece
>weigh?
Haven't weighed it per se, but I sure as hell notice when I pick it up
..... its heavy !
For general information to the list, this is how I found it .....
Looked for plastic pipe manufacturers & found someone who actually makes
pipe (not a distribution yard). This company makes the stuff from 200mm
(8") up to 3 meters diameter (10 feet !!) in 10m lengths. They only sell
by the full length, which for the 280mm pipe I got is $2500 (or about
$1500US).
Asked about yard off-cuts, answer that they grind all left-overs up and use
for further manufacture.
NOW, asked "who buys a lot of this in the 300mm diameter range". Found a
company which does plumbing for mining installations ....... "hell yes, we
have all number of off-cuts. Couldn't charge you what its worth, just come
to the yard and select what you want. $20 a piece is probably all we could
ask".
And as they say ..... the rest is history ;-)
They had about 20-30 pieces which would be suitable for TC use. I had a
hard time deciding between the 280mm (11") and a good length of 370mm (14.5").
I "whimped-out" on the 11" because I think I need to break the wife in
gently, and I plan on playing with TCs for quite some time ;-)
Cheers,
Mark
Tesla Page <http://www.cobweb-dot-com.au/~dkfinnis>