Re: SG copper pipe trick

["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>

This is an excellent suggestion.... I've tried sawing, with manual and
power hacksaws, and with a "cold saw", and, inevitably, the tubes wind up
"egg shaped cross section".  They also have burrs.  Filing and sanding
never really do leave the edges like you want.

A cheap tubing cutter (like the $5 ones) works really well, especially if
you have soft copper tubing, because the cutting wheel isn't all that sharp
to start with, and rapidly becomes dull.



Tesla list wrote:
> 
> Original poster: "Luc by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<ludev-at-videotron.ca>
> 
> Hi guy
> 
> Just a small trick: For new member who want to build a spark gap
> with copper pipe, use a pipe cutter with a dull wheel blade,
> normally when you buy a pipe cutter you have 2 wheel one on the
> cutter and often one in the adjusting knob, you could dull the
> cutting edge with sand paper. For the first turn  tighten hard
> the knob, this way you'll end up with a round end cut, less prone
> to arcing.
> 
> Cheers,
> 
> Luc Benard