Step 9: Fill to Excess

using a small putty knife, push more compound into and over butt joints
Photo: Kolin Smith
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Using a small putty knife, push more compound into and over butt joints. Pull the knife over each detail of the profile, leaving the compound a little proud of the joint. Once dry, the excess can be sanded smooth.
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    Tools List

    • miterbox with saw
      Miter box with hand saw
    • putty knife
      6-inch and 1½-inch putty knives
    • rasp
      rasp or sanding block
    • hammer
      hammer
    • grout sponge
      sponge
    • angled sash paintbrush

    Shopping List

    1. Plaster-coated Foam Molding
    Get 10 percent more than you think you'll need, to accommodate offcut.

    2. Joint Compound
    Lightweight, easy-sanding premixed compound is best. A 1-gallon container will cover about 60 feet of molding.

    3. 8d Finishing Nails
    To support long runs of larger molding profiles as the compound dries. 4. 150-grit Sandpaper

    5. Painter's Tape

    6. Primer and Paint