what about tig welding rod?
http://www.tinmantech.com/html/copper_index.html

Jon 

> -----Original Message-----
> From: piclist-bounces@mit.edu 
> [mailto:piclist-bounces@mit.edu] On Behalf Of Howard Winter
> Sent: 14 April 2005 10:52
> To: Microcontroller discussion list - Public.
> Subject: Re: [EE] Spot welder for battery terminals
> 
> Dan,
> 
> On Thu, 14 Apr 2005 09:48:55 +0100, Dan Smith wrote:
> 
> > On 4/14/05, Philip Pemberton <philpem@dsl.pipex.com> wrote:
> > 
> > > Tracking down some 5mm solid copper rod for the 
> electrodes is alsos 
> > > a bit tricky.. no-one seems to sell anything above 2.5mm 
> around here.
> > 
> > How about using a copper earth rod?  Here's a 1.2m length of 9mm 
> > copper rod for GBP3.55 + VAT.
> > http://www.tlc-direct.co.uk/Products/TLER.html
> 
> Unfortunately these aren't solid copper, but copper-plated 
> steel.  It might work, but even if the pointy-end was good 
> enough as is, you'd need to buy two because any other point 
> you made would be steel.
> 
> Cheers,
> 
> 
> 
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