1.
Cut boards. Cut 2x2s to length for the base frame, and assemble
it with 3-inch deck screws (corrosion-resistant flathead screws). To prevent
splitting lumber, drill countersunk pilot holes for all screws.
2.
Assemble base. Crosscut 2x8s to make five 36-inch-long pieces,
and place them edge to edge. Mark the last board so the overall width
of the base is 36 inches, and cut to size. Put the boards face down on
your work surface, center the base frame, and drive 2-1/2-inch deck screws
through the base frame into the base. Then turn the base assembly over,
and position it where you want the water garden. Use a level to check
the base in both directions, and use tapered wood shims under the base
frame to adjust it, if necessary.
3.
Make boxes. Crosscut the eight 2x8 side pieces to lengths shown
in the illustration, and assemble them with 3-1/2-inch deck screws into
two boxes. Position the first box on the base assembly, and miter the
1x2 banding to run around its perimeter.
4.
Add band. Center the banding on the joint line between the box
sides and base, and fasten it with 2-inch deck screws. Make sure to drive
some screws into the box sides and others into the base.
5.
Add the second box. Stack the second box on top of the first,
and add two more sets of banding: one straddling the joint line, and the
other flush with the top of the sides. Cut a 1/2 x 1/2-inch notch at one
corner to provide a neat pathway for the pump's electrical cord.
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