you can also look into GLUING your patches in,,,works BETTER than welding and seals the seams at the same time,,,and no heating of the metal...is done around here for years,,and we have A LOT of salt in the winter,,,my friend glued new fender surounds 5 years ago,,and still looks new...can't tell you how many rocker panels have been glues on rams around here and goes way longer than the welded in jobs,,,BUT,,,you'll likely here all kinds of stories from old time body guys telling you how welding is the best and only way to go,,and how ONLY a qualified bodyman can fix your truck right,,of course saving their jobs and ripping you off royally in the process,,,glueing has made the average owner able to do body repairs we could not easily do before,,,bodywork isn't too hard to do,,but you have to take your time prepairing properly,,but it's not rocket science,,that's for sure,,,now REAL bodymen,,the ones who can create panels and restore vintage vehicles to like new,,THEY are artists in their world for sure,,,