The tail pan and rear opening were prepped a couple days ago by painting some epoxy on the surfaces that would be adjacent to each other after welding for some rust prevention. Tonight holes were added to the tail pan for plug welding, and the panel fitted up..








Here's the epoxy, I use a letter A size (.234) drill bit for my plug welds, and to clean the epoxy from the adjacent panel, I use a letter A that has been flattened and backfaced to form a cutter similar to an end mill. It cleans the paint well, and hardly touches the metal on the adjacent panel..

















Butt welding the vertical seams...














Note the views from the back side show full penetration welds. Next, grinding the welds in prep for the next set of weld dots..