Step 13: Assemble the Inner Frame

Assemble the Inner Frame to make a planter bench
Photo: Kolin Smith
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Since its boards sit on edge, you need an inner frame to make up for the width of the other courses. Place two crosspieces on edge flush to the inside walls of the planter, then cut two shorter pieces to fit between them, also flush to the inside walls. Mark where the pieces meet one another, remove them, screw them together, and pop the inner frame back into place. Screw through the seat frame into the inner frame's crosspieces. To secure the assembly, drive 3-inch screws at an angle through the inside edges of the inner frame and into the planters, as shown. Now position, glue, and nail four more courses onto the box that will become the tall planter.
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    Tools List

    • four-foot level
      4-foot level
    • miter saw
      miter saw
    • circular saw
      circular saw
    • jigsaw
      jigsaw
    • speed square
      Speed Square
    • drill
      drill/driver fitted with a -inch paddle bit
    • square spade
      garden spade
    • hammer
      hammer
    • tamper
      hand tamper
    • caulk gun
      caulk gun

    Shopping List

    1. cedar 2×4s Get twenty 8-foot boards to make the 16½-inch planter pieces and the 82½-inch-long seat frame.

    2. cedar 1¼×6s Get four 6-foot boards to make the 63-inch-long seat, and one 8-foot board to trim the tall planter.

    3. ¾-inch gravel for drainage below the planters and to fill the assembled planters. Get at least 1½ cubic feet (three bags).

    4. potting soil to top off the planters filled with gravel. Get four 32-quart bags.5. construction adhesive Get 4 tubes.

    6. 3-inch stainless-steel deck screws

    7. 2-inch stainless-steel deck screws

    8. 3-inch galvanized siding nails

    9. 12-inch galvanized spikes Get eight