----- Original Message ----- 
From: "Philip Pemberton"
> 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.
>

I don't know what's available on that side of the 'pond', but here in the US
most residential electrical wiring suppliers have some bare copper 'wire'
that should be ok. It's usualy used to connect to the outdoor ground rod.
Even my local hardware has (IIRC) '00' which is about 4-5 mm dia for less
than $1 per foot. Might be worth a look.

-Denny

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