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Re: [TCML] Source for copper hardware

I machine mine out of solid brass --- for copper tubing.  You can also spot
weld a copper tab to the copper band.

Dr. Resonance

On Tue, Mar 30, 2010 at 11:30 AM, Dave Leddon <dave@xxxxxxxxxx> wrote:

> I've been trying to eliminate hot spots in the primary circuit of a
> relatively high current (~3000 amp) drsstc by replacing high resistance
> connection points with copper.  Even a one-inch length of 3/8-inch brass
> bolt can generate enough heat to melt the solder right out of a terminal
> lug.  Which raise another interesting point, what about solder?  It has ten
> times the resistance of copper so maybe all lugs should be crimped.  I only
> soldered them because I don't own a crimper large enough to deal with #2
> welding cable.  But I digress.  I've not had any success locating a source
> for copper nuts and bolts, probably because copper isn't strong enough to be
> consider a fastener, and so have been force to machine my own.  I would much
> rather just plunk down the credit card.  Does anybody know of a good source
> for copper hardware?
> Dave
> Pleasanton, ca
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