Figure 1
1. Set two 288 mm channel pieces side by side with the open end of
the U-shape facing down. Set two more 288 mm channel pieces across the
first
two, but with the open end of the U facing in toward each other (Figure 1).
Figure 2
2. Align the holes of the top channels to the holes of the bottom
channels where you’d like them to be (in the model pictured, the top
channels are fastened at the four large holes from each end to create a
bumper). At each corner, drop two SHCSs down through the two small
holes on either side of the large hole (Figure 2).
3. Thread the kep nuts on the end of the screws. Using the 7/64" hex wrench, tighten the screws.
4. Repeat Steps 2-3 for the other three corners.