Cab patch panels order of operations?

[Grounded63]

When your fitting up for butt welds, especially on exposed panels. Usually the tighter fitting, and especially the straighter fitting they are. The less heat distortion you'll have, after final welding. After cutting out where I need a patch panel. I'll file the edges to get them straight. Then scribe the patch panel to that panel. Trim and file to fit. Usually you'll end up with less heat distortion. If you spot/stich weld from one end to the other. Rather than jumping around like he shows in the video. I will also prep the underside of the panel prior to welding it on. Much easier to do. Than from under the vehicle, if you want to epoxy or paint it afterwards.