I just had a thought... I work at a body shop and own a stud welder. Could that be used to weld Al. wire to the part like a Sput-Welder? Maybe like clip leads to the outside ring for the ground and put the wire into the tip? Any body men out there?
Link to stud welder:
http://cgi.ebay.com/ebaymotors/H-S-A...spagenameZWDVW