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So I dont have to sand down to bare metal. I got like two layers of paint I know of. I also have a spot that bubbled so I took it down to bare metal and just sprayed rustoleum on it. DO I just sand down tothe first coat and rough that up a bit or just hit the top of the out coat. The person just painted over the original.



Make a carefull check on the rest of the paint if its bubbled sand it smooth, but no need to go to bare metal. Just a smooth clean surface, remember the time you take here reflects on the final paint.