[TCML] Source for copper hardware

[Dave Leddon <dave@xxxxxxxxxx>]

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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