With the summer already half over, I finally got the driver’s side fender completely painted. First, I did a lot of sanding of the sprayable polyester filler I had put on last fall. Sanding that stuff is a very dusty job, and both the top and bottom needed to be done. I probably sanded off 75% of it, but I had to add a bit more filler in a couple of places. Then I sprayed on three coats of acrylic urethane filler-surfacer, and block-sanded it. Once section of the fender needed a couple more coats and a bit more sanding. The last prep step was to wet-sand the entire fender, top and bottom.
Then I applied the same sort of finish coat that the rest of the car has gotten: a coat of epoxy sealer and three coats of (black) acrylic-urethane enamel (two coats on the underside). I also painted the four carriage bolts that hold the headlamp mounting bracket to the fenders.
The next task is of course to paint the other fender. That will be a lot less work, since it already has its coat of acrylic-urethane filler, and it just needs to be lightly block-sanded and wet-sanded, before getting its finish coat.