Remove the hardware from the door with a screwdriver. Extract any old nails or screws that were used to display wreaths and other decorative items. Apply putty to any unsightly holes. Allow the putty to dry and sand the entire door.
Measure the diameter of the door knob and any additional dead bolt holes in the door.
Mark the measurements on 1/2-inch thick plywood. Use a router to cut the circular pieces from the plywood. Lightly sand the edges.
Apply construction glue inside the holes left by the door knob and lock. Firmly press the wood circles into the holes, keeping them even with the rest of the door. Quickly wipe away the excess glue. Allow the glue to dry for one hour before making any additional changes to the door.
Place the door on a clean, flat surface. Apply stain to the door in a hue that complements the rest of your kitchen decor. Administer the stain in long, even strokes with a clean rag or paint brush. Allow the stain to dry completely -- at least three hours -- before applying the second coat. The older the door, the more likely it is that you will need to add a third application of wood stain.
Unscrew your kitchen table top from the existing frame. Set the hardware to the side. Stain the legs and table frame to match the door. The final color may vary slightly.
Measure the width and length of the table frame with a tape measure to ensure the proper placement of the door. Turn the door upside down on a clean surface and mark the measurements in pencil where you will center the frame.
Flip the table frame upside down on top of the door. Line the top of the frame with the pencil markings. Retrieve the hardware from the original table top and use it to secure the old door to the table legs with a screwdriver.