Step 5: Drill Holes in the Pipes

Rack the pipes into a triangular shape on their angled ends, with the tallest row of four in back and the shortest one in front so that all the angles line up. On the bottom (straight—cut) edge of each pipe, mark where each pipe touches the adjoining pipes. One by one, remove a pipe from the grouping and transfer vertical lines onto the side of the pipe from the bottom marks. On each line, drill a ¼—inch hole at ½ inch and 4 inches from the bottom; you'll run plastic ties through these holes to connect the pipes.
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    Tools List

    • japanese pull saw
      Pull saw
    • circular saw
      Circular saw
    • drill
      Drill/driver fitted with a ¼-inch drill bit

    Shopping List

    4-inch drainpipe Get one 10-foot length per rack

    1x5. Get 6 feet

    Stick-on numbersPlastic ties in 11-inch lengths

    Tennis balls Get two packs of three in different colors

    Spray paint