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Many years ago I saw a C3 that was painted after being stripped with chemical stripper. The next day after the car was painted it had balloons of paint protruding all over it. Apparently the stripper had not fully gassed out of the fiberglass and was now pushing the paint off. The shop owner wanted to blame the paint company.
I used " Aircraft for Fiberglass" stripper on some spots on my 68. The rest was razored and sanded off.
Paint striper really never gases out, it just plain need neutralizing and that is as simple a washing with soap and water at anytime.
You are right, on what it can do, about two years ago a jobber asked me to look at a hood on a car that was just painted, only the hood was bubbling and then we found out the hood had been stripped with paint remover and stored for around ten years, not sure the owner believed me or not at to the reason the hood bubbled first day in sun.