Re: Merging copper tubing for Primaries

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

Original poster: "Barton B. Anderson by way of Terry Fritz <twftesla-at-uswest-dot-net>" <tesla123-at-pacbell-dot-net>

Hi Bart Mc,

I did exactly as you, except I sweat soldered. I cut a 1.5" length of solid
copper wire (#6)
which fit inside the 0.375" primary tubing. Butted the ends together and
used a torch to solder
together. Works great. Of course, crimping will also work but the the crimp
may come loose over
time and handling, so I would suggest soldering with a torch. Then, simply
sand off any solder
bumps should you have any.

Regards,
The other Bart

Tesla list wrote:

> Original poster: "Bart by way of Terry Fritz <twftesla-at-uswest-dot-net>"
<bmcguyer-at-houston.rr-dot-com>
>
> Hello,
>     On my first coil, I had to merge two 50' rolls of 0.25" copper tubing in
> order to amount to the right length for my primary.  I simply cut a peice of
> wire (six gauge I think?) that formed a tight friction fit inside the tubing
> in order to join the two rolls.  I am making a new primary, and I am
> wondering if I should solder the rolls together instead.  I plan to use wire
> to join them again, and maybe solder ontop of that joint, but I do not know
> what to do.  I know my soldering iron will never complete the job.  Any
> suggestions?  Is it necessary?  Should I buy a propane torch ...?  What
> would be the best for me to do while I build my primary?  Thanks you in
> advance for any and all help.
>
>     Bart Mc.