Step 8: Apply second and third coats

• With the 10-inch knife, scoop up 2 inches of compound. Then scrape off 2 inches worth at each end of the blade.
• Apply compound to all joints and screwheads, then smooth it in a separate pass. Allow to dry overnight.
• The next day, sand with fine-grit drywall sandpaper.
• For third coat, load entire edge of 10-inch knife with compound and apply to joints and screwheads as before. Smooth to an imperceptible, feathered edge.
• Let dry overnight, then sand as before. Wipe all surfaces with a damp cloth to ready them for priming.
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    Tools List

    • drill
      for blending compound
    • drywall tape dispenser
      Drywall tape dispenser
    • swivel head pole sander
      Swivel-head pole sander with drywall sandpaper
      for smoothing first coat of compound
    • sanding block
      Sanding blocks
      for sanding corners
    • mud box
      Mud box
      for holding small batches of compound and cleaning knives
    • drywall knife
      5- and 10-inch drywall knives
    • mallet
    • drywall corner clincher tool
      Corner clincher
    • shop vacuum
      Shop vacuum

    Shopping List

    1. Medium-grit sanding screen or drywall sandpaper for smothing first coat of compound

    1. Fine-grit sandpaper for smoothing second and third coats of compound

    2. Joint compound

    3. Paper tape