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RE: My Primary Coil disaster



Original poster: "Oxandale, Terry by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Toxandale-at-spp-dot-org>

My personal experience in using this medium for a primary is to take the
coiled tubing out of the box 'as is', lay it down on top of your form, again
'as is'(making sure it is oriented correctly as to whether it is a spiral
out or a spiral in), and then start placing it pushing or placing the turns
"into" the form. You should not or can not twist this stuff, and if you flex
it too much, it becomes harder. For my medium sized coils (8" ID/20" OD) the
coiled flat packaging is almost ideal for this method. Go slowly, be
patient, and your primary coil should look very nice. This is not the best
photo of my coil (primary somewhat visible), but you will get the idea about
how well this size matches the packaging.

http://albums.photopoint-dot-com/j/View?u=1541023&a=11690377&p=41669275

(un)Terry

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Saturday, November 24, 2001 12:55 PM
To: tesla-at-pupman-dot-com
Subject: My Primary Coil disaster


Original poster: "Patrick Bloofon by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <transactoid-at-home-dot-com>

Okay, this whole tesla coil thing has not been going my way. First, the wire
breaks while winding the secondary (perhaps you've seen my post...). Now, my
primary coil is all but an expensive hunk of copper.
 
I cut out and drilled 5 really nice offsets. I mounted them onto a surface,
and
began feeding 1/4" copper tube through it, starting from the outside.  After
about 5 loops, the tubing was so bent, twisted, and demented out of shape I
couldn't go any further.  Loops were overlapping and the tube was flexed in
multiple planes (ie, bent side to side as well as up and down...). I'll try
to
get some pictures up so you can see this mess.
 
What I'd like to know is:
 
-Are there any good ways to re-bend or straigten the copper tubing when it
is
in such a state? (ie, is this thing salvagable)
 
-Seeing as my method of winding failed miserably, I'm guessing it's not how
others do it. What is the "proper" way to wind it?
 
PS. This copper tube is extremely expensive where I live. The cheapest I
found
was $30 for 50 feet.  Home Depot doesn't even carry it around here.
 
Thanks,
"A very frustrated coiler",
Patrick