Heavy surface rust treatment

[stangtjk]

I stuck with the prep n etch. Sanded it down as best I could then went over it multiple times with the prep n etch and scrubbed it with a wire bush. Got it as clean as what i thought was practical then hit it with epoxy primer and raptor liner. Still need to weld a new lip back across the bed rail. The lower edge was rusted and jagged so I just cut it off when I removed the inner bedside rather than try to save it.