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Re: Primaries and Copper Tubing

Subject:  Re: Primaries and Copper Tubing
  Date:   Fri, 18 Apr 1997 07:14:03 -0700
  From:   DR.RESONANCE" <DR.RESONANCE-at-next-wave-dot-net> 
    To:   "Tesla List" <tesla-at-pupman-dot-com>


To: Brendan

When you buy the copper tubing fresh in the box --- don't try to
straighten
it first.  Carefully remove the coil from the box and make slow and
careful
bends gently as you fit it into your primary holders.  Don't force it
and
try to slowly work at least 1 full turn ahead as you gently twist the
entire coil into a tighter spiral as you slowly work outward.  With this
technique you should be able to slowly work up a copper tubing spiral in
about 30-45 minutes for a single 6-10 turn primary.  

Once you bend or straighten the tubing first it "work-hardens" and
becomes
completely unable to make smooth bends.  If you have done this you will
have to scrap it out and start with a new roll.  Also, best to use
K-soft
copper.  There is another type used for plumbing that work hardens much
faster and is much harder to work with.  Guess what --- the electrons
won't
know the difference!!!

DR.RESONANCE-at-next-wave-dot-net


> 
>         My main question is this:
> 
>         I am trying to construct a sturdier primary coil using copper
> tubing,  and I am having a lot of trouble.  I'm finding the
> tubing difficult to work with,  and I haven't come up with a very good
> concept for the framing for the coil.  I have seen a lot of
> very beautiful looking primaries in some of the images posted,  but
> going over them,  I can't really get a good enough look at
> how they are constructed.  If anyone has any hints,  tips,  plans,  or
> even pointers to files that contain these plans (or even
> some nice closeup pictures of primaries),  I would love to hear them. 
> Also if anyone has found good ways to manipulate the
> copper tubing without destroying it,  I would love to hear it.
> 
>         Right now my back hurts,  and I am frustrated,  and I'm looking
> for advice and inspiration;  and I don't even want to see
> any copper for about 24 hours.
> 
>         Many thanks in Advance,
> 
> Brendan