It's good to keep in mind, before we all get carried away about which is better, that he is asking about a new door bottom panel I think. One that is formed already, that would need flanging, not easy. Unless he is building his own. Trimming the truck and patch is a bit tricky. They must fit real tight. Don't get into " I cut it twice, and it's still to short". Agree totally with practicing. You can use any combination of butt, lap, glue, screws, rivets, MIG, TIG, braze, lead and filler to get'er done to your satisfaction, not ours. Post some pics as you go. I sure hope you have the door off and use real bright light. Go slow! Did I say go slow yet? Cool the welds with air and go slow. Don't forget to slow down.
