Step 6: Predrill screw holes

drilling screw holes in the blocking.
photo: Kristine Larsen
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Fit your drill/driver with a countersink combination bit and predrill screw holes in the blocking. Bore holes just deep enough so that the screws will anchor in the tread and apron but not go all the way through. Screw the blocking to the apron and tread.
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    Tools List

    • nail puller
      nail puller
    • paint scraper
      scraper
    • speed square
      speed square
    • bar clamps
      bar clamp
    • jigsaw
      jigsaw
    • drill
      drill/driver, with countersink combo bit
    • torpedo level
      torpedo level
    • hammer
      hammer

    Shopping List

    1. Salvaged spindles

    2. Salvaged stair tread

    3. Rough-sawn pine board, or salvaged riser

    4. 2x4, for blocking

    5. 3 ½-inch deck screws

    6. 1 5/8 screws

    7. 8d finishing nails