Re: Primaries and Copper Tubing

To: tesla-at-poodle.pupman-dot-com
Subject: Re: Primaries and Copper Tubing
From: Tesla List <tesla-at-stic-dot-net>
Date: Sun, 20 Apr 1997 11:08:08 -0500
Approved: tesla-at-stic-dot-net

Subject:  Re: Primaries and Copper Tubing
   Date:  Sat, 19 Apr 1997 05:03:33 -0700
   From:  Gary Weaver <gweaver-at-earthlink-dot-net>
     To:  Tesla List <tesla-at-pupman-dot-com>
References: 
           1

Tesla List wrote:
> 
> 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. 



You can remove the work harden from the copper tubing with heat.  If
your 
kitchen oven has a self cleaning setting put the roll of copper tubing
in the 
oven. Set your oven to clean for the recomended length of time, usually
about 
3 hours. The work harden will be removed and the copper will be dead
soft 
again.  

Gary Weaver