I'm starting on the body work now for my '46 Chevy Panel truck and the rear fenders need some spots filled from previous work that has been done on them( it will almost be a full skim coat). They are off the body now because of some work I had to do inside the wells. My question is that off the body these fenders are real flexable should I apply the filler and sand them off the body or put them back on? Also which filler do you think would be better, plain filler or filler with fiberglass particles. I've used both, myself I like the filler w/fiberglass I just think its stronger. Just would like to know what you folks think.
Thanks
Thanks