Step 5: Attach the Casters

Mark Powers attaches the casters to the bottom of the planter frame
Photo: Kolin Smith
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Position a caster on one of the end base plates, mark its four mounting holes, and drill the holes through the base plate. Attach the caster using hex-head machine bolts with washers and nuts. Install the other three casters, with the two locking ones at opposite ends of the planter. Flip the assembled frame upright.
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    Tools List

    • miter saw
      miter saw
    • adjustable clamp
      clamps
    • drill
      drill/driver
    • jigsaw
      jigsaw to notch boards
    • socket wrench
      socket wrench to tighten hex nuts
    • combination square
      combination square to mark cutlines

    Shopping List

    2x4 pressure-treated boards
    Get two 8-footers and three 6-footers to build the planter frame.

    5/4x6 pressure-treated decking
    Get one 8-footer and two 6-footers for the floor and base.

    1x6 cedar trim
    Get four 8-footers and eight 6-footers to sheathe the planter and make the trellis.

    5/4x6 cedar decking
    Get one 8-footer and two 6-footers to make the trellis frame.

    1x3 cedar trim
    Get one 8-footer and four 6-footers to make the trellis screen and rear cap trim.

    2x2 cedar pickets
    Get 17 4-footers for the trellis screen.

    1x4 cedar trim
    Get one 8-footer to make the front and side cap trim.2-inch and 2½-inch deck screws to assemble the planter frame and trellis

    1-inch stainless-steel trim-head screws to fasten the cedar boards

    3-inch-diameter casters
    Get four (two locking), each rated to 250 pounds.

    ¼-by-1½-inch galvanized hex-head machine bolts plus washers and nuts
    Get 16 of each to attach the casters.

    -by-4-inch galvanized carriage bolts plus washers and nuts
    Get six of each to the attach the trellis to the planter.

    teak oil

    ¾â€“inch crushed stone
    Get four 50-pound bags to fill the bottom of the planter.

    landscape fabric to line the planter box