If you're only doing the odd bit of welding and you don't need it to look pretty, Arc is cheaper and easier to set up if you can't store gas bottles. I only do gorilla welding (ugly but strong) and I've never been able to afford a mig, so I just use an old MMA

Onsite Support were doing a special on a decent arc welder for around £300+VAT.

I've never welded car bodies, only chassis and chunky metal so can't comment on mig. Looks more tricky than arc which is just point and shoot.
 

Similar threads