What process do you use to get a good finish? Depends on who you ask what a good finish is. The bottom line is how much time do you want to spend on it? Here is what we do: Micro fill pretty much the whole airplane and sand away what isn’t smooth using West Systems epoxy. Yes, you could use EZ Poxy, if you enjoy sanding concrete. West Systems is way easier to sand and cures faster. We use a LOT of power tools here. DA sanders with 36 grit sandpaper is the starting point