Size?erm let me see now...its 13x17x24 inches and weighs a ton :-)

Yeah I know the mags are specifically a temp fo tack weld until you have a secure piece and then you take it away to continue the job.
Thing is they save a lot of bother making a jig and are a god send for getting a start weld on an upright box section.

Done a little bit of arc welding in the past,that didn't rock me boat. :-(