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Re: weird primary design
Hi Fucian,
I had the same problem with creating my primary, and since this is my
first
primary, I didn't quite know how to do it, so it
took me a couple of times to get it like this, and it worked pretty good I
might say.
First I took a piece of mutliplex wood that was a little thicker than the
tubing (1/4" aka 6mm) and sawed out a circle of 100 mm (4")
Then, to compensate for the wire thickness when rolling the tubing around,
I cut a piece of the wood that will start with 6 mm
in the wood, slowely will become less when proceeding along the circle.
(sorry for the long expl. but my English isn't that good)(Holland)
This being my solid inside shape to role my tubing along, I had the same
trouble as Alex Crow, it was getting too much trouble to
bend the copper, therefor I heated the copper tubing (on a steel table)
untill it was dark orange, to make it soft again, ofcourse you'd have
to let it slowely cool down again though.
Next I could easely bend it along my wooden shape, no matter how the
tubing
was bend before.
Real easy :-))
And if you don't have a torch, it can also be done above the furnache,
when
carefull enough not to burn your hands.
Then you'd have a nice spiral, and ready to put it in the supports for
your
primary.
Good luck
greetings from Jeroen Kooiman from Holland
----- Original Message -----
From: "Tesla List" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, March 18, 2000 10:26 PM
Subject: Re: weird primary design
> Original Poster: Fucian-at-aol-dot-com
>
> the copper tubing was all out of shape and i had to fix it.now its all
bent
> and crapy looking.
>
>
>