How strong is a 70amp arc (stick) welder? Do you think i can weld on these subframe connectors? Im a good welder i just need to know if the weld would hold or is this welder to weak. Also i just finished welding a roll cage with the welder to. welds are nice but is this cage going to fall apart? im not racing or anything but should i remove the cage and weld it with a more powerful welder? thanks guys im not the welding master.