Primary Conductor

Hi All,
         I have just been quoted 45 ($70) for the 45m of  inch soft copper 
pipe that my next coil's pri will need.  Darn.  Having just laid out 117.50 
on a huge smoothing cap, 30 on diodes, 25 on magnet wire, 65 on caps I 
don't feel like spending much more.  Is it possible to use welding cable for 
the primary? Can anyone in GB get copper pipe cheap?  Help!!!

PS.  Most of the stuff i posted a while back is still for sale - come on guys 
I need the  ;-)

Shuddering Under his bank statement
Nick Field