Updating old cupboards
But it has to be a primer specific to kitchen cupboards, as does the paint, and it probably will need to be an oil base as you will need to protect from kitchen moisture.
While wearing gloves, sponge the mixture on both sides of the cabinets and wipe off with a clean cloth.
If your repainting project is just a facelift for the cabinets, you don’t need to sand and paint the inside of the cabinets; mask off the interiors with painters’ tape for a clean finish and sand only the front surfaces and visible edges of the cabinet face frames.
Use a wood sanding block to prevent rounding over the wood edges.
Apply tape to the back surface of the cabinet doors underneath those holes. Mix with putty knife, and spread into holes and dents, slightly overfilling.
Allow the filled areas to dry, then use sandpaper to smooth out the surface of the cabinets.