Edge finished the F-707 and F-708 bulkheads. Used files, emory paper and scotchbrite to get in and around all the nooks and crannnies. Drilled the rivet holes to full size. Scuffed all with scotchbrite pads and washed with Dawn dish soap and warm water. Set out to air dry.
Used the downdraft table and NAPA 7220 primer to finish the prep.