When I wanted to replace our 1980s kitchen cabinet doors, I turned to my pallet wood after seeing a picture of this online. I wanted the door frame to be store-bought wood for a modern look but wanted the center panel to be pallet wood to kind of go with our Corrugated Metal backsplash.
I used the existing hinges to reuse the cabinet bodies as if nothing was wrong with them and used the existing hinges. The door frames are 1×3 Poplar wood from a box store, and I put them together with pocket holes and glue. I resawed my pallet wood pieces in half to make the panels, and they are shy of 1/4″ thick.
I used staples to hold them in a rabbet cut in the door frame. Then, I put one coat of primer and two coats of paint on the door frames, stained the pallet wood, and then put one coat of Polyurethane on top of that.