After sanding filler and bodywork areas,jambs, whatever, blocksandng primer, maybe sanding base, and wetsanding with 1500 or whatever you want me to keep stepping down on sandpaper till I get to 20,000 grit. By the time you get to buffing after painting your pretty sick of sanding. I think I'll live with what will buff out for now, expecially since I wetsand clear by hand at this time, not having a finishing da.