Step 5: Attach the treads

Again using a drill/driver and countersink bit, drill four pilot holes through each tread for the screws that will attach it to the support, with two holes going through the top edge of each support piece.

Run a bead of glue along the support’s long edge. Lay the tread on top of it; make sure that the long edge of the tread is aligned with the long edge of the support.

Screw the tread to the support with 2-inch deck screws.

Repeat this process with the other tread.
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    Tools List

    • circular saw
      Circular saw or jigsaw
    • hammer
    • drill
      Drill/driver fitted with #6 countersink bit and 5/16-inch drill bit
    • random orbit sander
      Random-orbit sander
    • 30-foot tape measure
      Tape measure
    • straightedge guide

    Shopping List

    1. 12 feet of 1½-inch diameter pine handrail
    (round on one side, flat on the other)

    2. 3 feet of 1x8 poplar

    3. Wood glue

    4. 3d nails

    5. 2-inch deck screws6. 1¼-inch deck screws

    7. Four ¼ x 3½-inch carriage bolts
    with fender washers, lock washers and wingnuts

    8. 120-grit sandpaper

    9. One pair of 1½-inch rubber feet (sometimes used for furniture or canes)