Step 4: Clamp the wall

clamp the wall
Photo: David Carmack
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Slip a 2-inch plastic washer over a 1 5/8-inch drywall screw, and drive it into the lath through one of the adhesive-filled holes. The screw pulls the lath against the plaster's back side while the washer gives the screwhead a wide clamping surface. Plant washers about 8 to 12 inches apart on both sides of the crack.
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    Tools List

    • drill
      Drill/ driver with 3⁄16-inch masonry bit

    • eye goggles
      Safety goggles

    • latex gloves
      Disposable gloves

    • caulk gun
      Caulk gun

    • putty knife
      Putty knife

    Shopping List

    1. Acrylic conditioner

    2. Adhesive (like Big Wally's Plaster Magic, used here)

    3. 2-inch plastic washer

    4. 1 5/8-inch drywall screw

    5. Joint compound