As per the title. I was asked to fix a flange that had broken off an extraction tube. No problem said I. got it home and It's aluminium. I've got an arc welder. There are only a couple of welds I need to do. Has anyone got ONE electrode I could have to do the job please. I need to get it back to the guy on Saturday . I'm in the Midlands and can pick it up from you if that helps, Thanks in advance. Dave