And although it may look chippy and rough it’s actually very, very smooth.
I sealed the door on all sides (including hardware) with two coats of Minwax polycrylic clear satin:
Scrap off all the paint with a paint scraper being careful not to gouge the wood.
Sand using orbital sander.
Wipe with damp cloth.
Seal with 3 coats of polyurethane.