Separate names with a comma.
ok thanks for your advices.
the the for you is to repair before blasting or blast then repair ?
Blast first so that you have clean metal to work with.
cut out the bad pieces of the panel. not the whole panels. blast everything you can reach and weld in replacement pieces. if you remove the whole panels there it is likely they will be destroyed in the process. you will have to make the pieces that are to be replaced. no quality new panels are available.