M
MisterCinders
Guest
No offense, but just misting a little primer over the bare metal should be just fine. All you're doing is putting a thin barrier between the metal and new base coats. No need to feather it back farther, or especially strip and re-do it..sheesh. As long as all the materials you're using are compatible together from the start, you shouldn't have any problems.
None taken.
Even with the same materials, the different drying times are my best guess as to why spot primed areas never seem to blend in when I do them (that or it's karma for my unclean lifestyle, crimes against humanity, etc.
Also, if the paint "tore" or chipped from the metal leaving a distinct border, you should feather in the area, or you'll just have a divot in the finish that is painted to match the old surface.
With plastics, I would spot prime, etc. Unless you have a lot of bondo work on that tank, stripping the tank is easy. That's why I'd consider it against the risk of a splotchy area, at least on the top of the tank where it will forever mock you.