Flange joints have their uses, such as putting a repair section into a floorboard, etc. Just don't use them to create a seam that was not there before in a panel that's visible from the outside. I've got a flange-making tool that fits my air hammer, and it's a real time saver on a patch panel that's going to be out of sight when the job is finished. I also butt weld with a needle-sharp, tiny flame from an acetylene torch when necessary, and do metal finishing with NO body filler in some places.
Jerry
