Step 9Secure the top
Start by clamping the top board in place and drilling pilot holes through the top board into the side boards, taking care to avoid the grooves for the windows. Next insert threaded rods into the pilot holes in the side pieces. Enlarge the holes in the top piece so the top piece can easily slide onto the threaded rods. Next put a washer on top of each threaded rod and then a nut. Wing nuts are nice for this because they can be more easily tightened by hand but regular nuts will work too.
The first picture shows the first two rods in for testing. The second picture shows the four threaded rods and the last picture is securing the top for the final test.
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