Re: Why I need (or thought I did) copper hardware . . .

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

Original poster: "Steve" <steve-at-g8cyerichmond.freeserve.co.uk> 

Threaded copper rod used to be used in some high current/low voltage
connections in the automotive industry, I have found them on some old Fords.
Not sure if they are still used, from what I remember the ones I came across
were used for starter motor terminals, and were about 5mm. As to machining
Cu, I gave up years ago, you need different angles on cutting tools for a
start, simply because the metal is so soft. As to lubricants I seem to
rmember that I was recommended a silicone based oil.
 >
 > At 08:58 AM 7/4/2004, you wrote:
 > >Thanks for all the responses.  I probably should have explained why I
need
 > >(or thought I needed) the copper hardware to begin with.
 > >I've made a few MMC enclosures using PVC Type I material and on each side
of
 > >the enclosure (which is vented now for cooling) I had
 > >a standard 1/4-20 steel bolt for an electrical connection.
 > >
 > >This was to be used for the ISSTC II coil i recently finished and found
that
 > >these steel bolts are getting so hot that they are actually melting the
 > >PVC material.  They are RED HOT!   I have eliminated induction type
heating
 > >with them, so resistive losses is the only other culprit here.
 > >
 > >Using a better bolt would hopefully solve this problem (copper, brass,
 > >aluminum ? ? ?)
 > >
 > >Thanks
 > >Dan
 >
 >