dido what you said on the thick stuff i start from the thinker metal to the thinner i also use the 220 stick welder for it and save the flux core welder for the thin stuff but either way the welds should be /look the same when i do use the flux welder on heavier metal i turn down the wire speed and turn the setting to high i put some cross bracing on my custom bronco's bumper i finished up this past weekend and got it so hot i bubbled the piant on the other side of what i was welding too
but prep work is a must for a good weld on a sid enote i noticed that you angled the corners front to back instead of bottom to top i cut mine on a 45 degree to help with the bumper hanging up on anything i'm gonna use the same style on my toy when i get the flatbed done