Step 3: Cut inside corner joint

cut inside corner joint
Photo: David Carmack
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•Coping is the process of cutting the end of a molding to mimic the profile milled into its face. Coped cuts are used where one piece of crown molding meets another at an inside corner.

•Place a length of crown upside down on the miter saw so that the molding's bottom edge—the edge that will sit on the wall—rests against the fence, and the top edge—the one that goes on the ceiling—rests against the table.

•Set the saw to 45 degrees; swing the saw left for a left-side coped corner, and vice versa for a right corner. When you make the cut, the long point of the miter should be on the back of the molding, not on the face.

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    Tools List

    • miter saw
      Power miter saw with 10-inch carbide-tipped blade
    • drill
      Drill/driver,
      for drilling pilot holes for nails
    • 16-foot tape measure
      Tape measure
    • pneumatic finish nailer
      Pneumatic finishing nailer with 1½- to 2-inch finish nails,
      to fasten molding to wall
    • framing square
      Framing square,
      for laying out molding on walls and ceilings
    • chalk line
      Chalk line,
      for snapping installation lines on the wall
    • coping saw
      Coping saw,
      for coping molding at inside corners
    • utility knife
      Utility knife,
      for trimming coped joints
    • rasp
      Wood rasp,
      for fine-tuning coped joints
    • studfinder
      Electronic stud finder,
      for locating studs and joists
    • hammer
      Hammer

    Shopping List

    1. 4d, 6d, and 8d finish nails

    2. 1/16-inch drill bit

    3. Wood putty

    for filling nail holes



    4. Acrylic or other flexible caulk

    to seal gaps between molding and walls and ceiling



    5. Carpenter's glue

    for adhering outside corners and returns