Step 10: Check the Miter Joints.

checking the miter for gaps
Photo: Ryan Benyi
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If any miter joints have gaps, use your finger to apply wood putty, as shown. Fill visible nail holes, too. Once the putty has dried, use a piece of 120-grit sandpaper to smooth any sharp edges or excess putty. Paint the molding and the door with a latex primer and a finish paint, and let dry.
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    Tools List

    • flathead screwdriver
      Flathead screwdriver
    • Phillips screwdriver
      Phillips-head screwdriver
    • combination square
      Combination square
    • framing square
      Framing square
    • miter saw
      Miter saw
    • bar clamps
      Clamps
    • pneumatic finish nailer
      Pneumatic nail gun
    • rounded chisel
      Rounded chisel
    • mallet
      Mallet

    Shopping List

    1-by-1¾-inch poplar nose-and-cove molding Get four 8-footers.

    18-gauge 1-inch nails for pneumatic nail gun

    Wood glue

    Wood putty

    120-grit sandpaper

    Latex primer and paint

    New lockset (optional)

    Note on proportions: A typical interior four-panel door has three equivalent stiles with a matching top rail and a deeper base rail. Mock up simple patterns cut from cardboard to see what size panels will look best on your door.