I have two fronius transteel 3000 pulse welders for sale, both in flawless condition only ever used for aluminum MIG. I bought from a tech school in hopes of using but I went with a mobile rig instead. You dont need a special gun to use for aluminum just the regular one you use for everything else. They do not come with ground cables but can be ordered online. 2200ea or 4000 for both obo.