Re: Copper tube for Primary

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

Soft copper tubing work hardens very easily.  Make the first bend you make
the last you attempt, and life is much better.  Someone on the list
published a way to re-anneal the tubing by heating and cooling, but, it's a
pain to fabricate work-hardened copper, no matter how you deal with it.

Tesla list wrote:
> 
> Original poster: "Steve White by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<slwhite-at-zeus.ia-dot-net>
> 
> I had no trouble at all taking the tubing right out of the box and laying
> down my 36" diameter primary. It took me and my wife about 15 minutes. It
> came out perfect. The secret, I think, is having your primary forms properly
> machined, measured, and mounted before you start. Remember, the tubing is
> already bent in the box. All you have to do is feed it out properly. I am
> talking about soft copper refrigeration tubing, not the hard stuff.
> 
> >