Thread: Rattle can primer

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I have a spot or 2 on my car I need to work on. Is it acceptable to use rattle can primer? If so, any recommendations for a light gray?
Also, I had to buy a new gas tank cover panel. It's fiberglass and fits between the rear fenders. I have seen some cars where this panel is screwed on and some not. I'm wondering if it's ok to fiberglass this panel in to each of the fenders.
The panel I received is about 4 inches too long. I assume it was made this way to allow for cutting to fit. The other panel was riveted on before and there are a bunch of holes in the fenders. I assume they had planned on covering the rivets with something compatible with fiberglass. I figured why not just glass both ends on the underside and finish the top. Opinions? I'll show a pic of the missing panel so you can see what I'm talking about.