My homemade repurposed welding carts for heavier transformer welders. Lincoln 140c flux core on a beat up Craftsman bottom chest almost scrapped. Built a 3/16 angle frame for it, made provisions for tank if I ever wanted to put my mig on it. Used an old Yamaha snowmobile track suspension axle and idlers. My newer Hobart lx is on a 3/16" angle frame. Repurposed or cheap casters, / hangers on both are old repurposed x bracing from old beat up steel shelving. Got lazy and welded castors on frame, don't recommend unless proficient grinder operator. Also not very off road capable like some. Sure beats rolling on a slab vs carrying 70+ lbs around though. Apologies if posted before don't remember, so ignore.